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The Taiwan Perovskite Research and Industry Association (TPRIA) was officially launched on May 18th. The establishment of this alliance aims to bring together experts from the perovskite industry, academic and research institutions, and other related sectors to establish a platform for industry exchange and collaboration. Its primary goal is to construct a complete perovskite industry chain in Taiwan and accelerate the diversification of the industry. On April 5th of this year, Prime Minister Fumio Kishida of Japan announced the government's policy to popularize "flexible perovskite solar cells" by 2030. Japan plans to utilize newly established funds to support production system preparation and technology development for mass production. On May 12th, First Solar, the world's largest thin-film solar company, announced the acquisition of Swedish perovskite solar research company Evolar AB for approximately $38 million. This acquisition further solidified its global leadership position in the thin-film solar energy field, resulting in a significant surge in First Solar's stock price, reaching a record high with a peak increase of 26%, the highest since 2008. In the face of international competition, the establishment of the Taiwan Perovskite Research and Industry Association effectively combines the strengths of Taiwan’s perovskite-related industries and research institutions, promotes collaboration and exchange within the industry, expands the market scale, and fosters cooperation and innovation through resource sharing and communication platforms. This initiative accelerates the research and application of perovskite technology, enhances the international competitiveness of Taiwan's perovskite industry, and achieves sustainable industry development. The inaugural general assembly of the alliance, also the first member assembly, elected the first chairman through a vote. Mr. Lai-Jhu Chen, Chairman of TPSC Taiwan Perovskite Solar Corp., was elected as the chairman. With his extensive industry experience and expertise, Chairman Chen will lead the development of the alliance and promote the implementation of various important tasks. Under his leadership, the Taiwan Perovskite Research and Industry Association is expected to become a significant force driving industry innovation and international cooperation. The inaugural general assembly of the alliance was attended by 40 founding members representing academic and research institutions, material, equipment, process, and various related application industries. It is worth mentioning that the global industry association, SEMI is also a founding member of the alliance, hoping to become one of the key forces in the development of Taiwan's perovskite industry. SEMI representatives invited alliance members to participate in the "ENERGY TAIWAN & Net-Zero Taiwan," which will be held from October 18th to October 20th at the Nangang Exhibition Center, Taiwan. The exhibition will host a series of forums and lectures focusing on the latest trends and innovations in renewable energy and green technology. The alliance has been specially invited to share keynote speeches on the trends in the perovskite solar energy industry during the forums. In addition, HELIARTEC Solution Corp., a leading Building Integrated Photovoltaics (BIPV) company, is also one of the founding members of the alliance. The establishment of the alliance has facilitated the collaboration between TPSC and HELIARTEC. Both parties announced their collaboration to jointly expand the market for perovskite solar energy in the field of building applications. This highlights the collaborative power of the alliance, which will continue to attract more capable companies and experts to join, working together to advance the development of Taiwan's perovskite solar energy industry. Chairman Lai-Jhu Chen stated that the alliance has planned two important events this year, including participation in the "16th (2023) International Photovoltaic Power Generation and Smart Energy Conference & Exhibition (SNEC)" held in Shanghai from May 24th to May 26th, as well as the "3rd Taiwan Perovskite Industry Forum" scheduled for August 31st. In the future, the alliance will organize various exchange activities to promote industry development and innovation. It will continue to collaborate with relevant departments, institutions, and international organizations to jointly explore the prospects of the perovskite industry, injecting new momentum into the sustainable development of Taiwan's perovskite industry. The establishment of this alliance has attracted significant attention from the industry, with major corporations, research institutions, and experts expressing their expectations and support. Through collaborative efforts, alliance members will further explore the application value and technological innovations of perovskite, bringing more opportunities and breakthroughs to the industry.

Perovskite solar technology exhibited at the 2050 Net Zero City Expo, Taiwan Perovskite Solar Technology (TPSC) joins forces with Kingyoup Optronics Corp. to showcase a new vision for architecture. Taiwan Perovskite Solar Technology participated in the "2050 Net Zero City Expo" held at the Nangang Exhibition Hall from March 28th to 31st, and unveiled the "Lu Ban 1," a new zero-carbon building concept developed in collaboration with Kingyoup Optronics Corp,. "Lu Ban 1" is the only zero-carbon building concept at the exhibition that is powered by perovskite solar energy. The unique feature of this building is its use of transparent perovskite solar cell, which integrates glass substrates to create a distinctive appearance while significantly increasing the self-sufficiency ratio of the entire building. This breakthrough overcomes the limitations of existing building-integrated photovoltaic (BIPV) technology, making zero-carbon buildings no longer just a dream. Following the lifting of pandemic restrictions, the "2050 Net Zero City Expo" attracted a large number of foreign professionals in the fields of architecture and energy. Many foreign visitors expressed great interest in the uniqueness and innovation of "Lu Ban No.1," jointly developed by Taiwan Perovskite Solar Technology. During the four-day exhibition, Taiwan Perovskite Solar Technology's booth attracted attention from many different industrial manufacturers. "Lu Ban No.1" was also visited and highly regarded by Secretary-General of the Presidential Office Lin Chia-lung and Minister of the Interior Lin Yu-chang. Chairman of Taiwan Perovskite Technology, Lai-Juh Chen, stated that a net-zero city will not happen without zero-carbon buildings, and zero-carbon buildings cannot exist without third-generation solar energy technology. Perovskite solar energy will play an important role in the future of the construction industry. Photo: Lu Ban 1, zero-carbon building concept powered by perovskite solar energy Perovskite solar energy is a third-generation solar energy technology. Compared to traditional silicon solar cells, perovskite solar cells have higher photoelectric conversion efficiency, lower costs, and lower carbon emissions. In the future, flexible perovskite solar energy is one of the important directions for development. Compared to the current technology using glass substrates, flexible perovskite solar energy is not only lighter, but can also be integrated into non-planar building materials, making it more widely applicable. In the future, Taiwan Perovskite Solar Technology will continue to invest in related research and development, bringing more innovation and breakthroughs to the energy transition and construction industry.

As climate change becomes more severe, countries around the world are working to reduce carbon emissions, and the trend toward zero-emission buildings has become an important part of the construction industry. The European Commission has proposed amending the Energy Performance of Buildings Directive (1) to move from the current "Nearly Zero Energy Building" (NZEB) to "Zero Emission Building" (ZEB), in order to better align building energy efficiency requirements with climate neutrality goals and promote the development of sustainable buildings. The requirements of ZEB are extremely high energy effiency, fully covered by renewable energy, and no carbon emissions from fossil fuels. This means that buildings need to use very low energy and meet their energy needs through the use of renewable energy, achieving zero carbon emissions. According to the International Energy Agency's report, the building sector accounts for about 36% of global greenhouse gas emissions, making it one of the largest sources of emissions. These emissions come from energy use in buildings, including heating, cooling, lighting, and appliances. Therefore, "Zero EmissionBuilding" (ZEB) is a necessary condition for achieving the vision of a net-zero city by 2050. Moving to the United States, the government of Chicago, known as the city of skyscrapers, announced on August 8, 2022 (2) that all public buildings and sister agencies, such as Chicago Public Schools, the Chicago Transit Authority, and the Chicago Housing Authority, will switch to using 100% renewable energy by 2025. This historic investment will largely come from a new utility-scale solar farm, which will be built in compliance with the Climate and Equitable Jobs Act (CEJA) standards. The city will also seek local projects to invest in clean energy in Chicago. In 2018, the organizing efforts of the Ready For 100 Chicago Collective directly led to Chicago's first commitment to transition to renewable energy. How can skyscrapers become zero-emission buildings? This is a major challenge for the construction industry, and it is clear that the building industry needs to innovate further to achieve the vision of a net-zero city by 2050. The vision of a "Net Zero City" requires more innovation in renewable energy technology to achieve it. To achieve "zero-emission buildings," Taiwan Perovskite Solar Cell Technology (TPSC) has partnered with Kyopt to launch "LuBan 1" The design of LuBan 1 is based primarily on perovskite solar energy. Perovskite solar cells are a third-generation solar cell technology that converts solar energy into electricity using the light absorption characteristics of perovskite materials. Compared to traditional silicon solar cells, perovskite solar cells have higher photoelectric conversion efficiency and lower manufacturing costs, and can also achieve multiple designs such as transparency, flexibility, and color, making them more widely applicable. description: The concept illustration of "Luban 1" as a zero-emission building with a main energy source based on perovskite solar cells. The roof of "LuBan 1" uses high-efficiency perovskite solar cells to maximize solar power generation, while the building's three sides use a combination of transparent and semi-transparent perovskite solar cells to fully utilize the building's facades for power generation. The transparent perovskite solar cell uses TPSC's exclusive transparent electrode design, which effectively maximizes the solar cell's power generation area. The building's appearance can also be freely combined according to the building's design, meeting the standards of zero-carbon buildings while also considering the aesthetics of the building. In addition, perovskite solar energy can generate electricity in weak light conditions, and the indoor tables in LuBan 1 can effectively convert indoor light into electricity, driving various appliances and sensors to improve the building's energy efficiency. Combined with energy storage systems, "LuBan 1" can significantly reduce external energy use and further increase the building's self-sufficiency ratio to meet the standards of zero-carbon buildings. TPSC looks forward to showcasing this innovative design concept product at the 2050 Net Zero City Expo from March 28 to 31 at the Taipei Nangang Exhibition Hall. We hope to explore with industry experts and guests how to build a more sustainable and environmentally friendly future for net-zero cities. 2050 Net Zero City Expo. Exhibition dates: March 28 (Tue) to March 31 (Fri) for a total of 4 days Visiting hours: March 28 to March 31, 10:00-18:00 Exhibition location: Taipei Nangang Exhibition Hall 2, 4th Floor (No. 2, Jingmao 2nd Road, Nangang District, Taipei City, Taiwan) Booth No. 205A Taiwan Perovskite Solar Cell Technology: https://www.tw-perovskite.com/ Reference: https://energy.ec.europa.eu/topics/energy-efficiency/energy-efficient-buildings/nearly-zero-energy-buildings_en https://localtoday.news/il/chicago-is-targeting-100-renewable-energy-by-2025-167830.html https://smartcity.org.tw/show_intro.php?k=2050NetZero

TPSC, Taiwan Perovskite Solar Corp, recently announced that their A4-size perovskite solar cell, the "Mercury I Line," has achieved stable baseline and completed the first batch of orders for delivery. After relentless efforts from their research and engineering teams, TPSC established the production line on February 9th, following the Lunar New Year. The "Mercury I Line" is TPSC's large-area perovskite solar cell production line, representing a mass-production design that integrates unique innovative materials, independently developed processes, and professional equipment solutions. TPSC Chairman Lai-Juh Chen said that the successful and stable production of the product, and the completion of the first batch of orders, is not only an essential milestone for the company but also indicates that Taiwan's perovskite solar energy industry has taken a significant step forward. In December 2022, TPSC held the 2nd Taiwan Perovskite Technology and Application Forum, where they announced the establishment of the "Taiwan Perovskite R&D and Industry Alliance (TPRIA) [3] " to strengthen Taiwan's competitiveness in the global perovskite solar energy industry. By creating an industrial exchange and cooperation platform through this alliance, TPSC hopes to build a complete perovskite industry chain in Taiwan. Chairman Lai-Juh Chen stated that the alliance will officially launch in March 2023 following the standard operating procedures, and many experts from academia, research institutions, and industry have already joined as members. He believes that the resources and power of the alliance will contribute significantly to Taiwan's perovskite solar energy industry. Regerence reports: 1. https://www.ntdtv.com.tw/b5/20230217/video/358477.html 2. https://ctee.com.tw/news/industry/810309.html 3. https://www.tpria.org/

With the booming development of the solar energy industry, perovskite has become one of the important raw materials. According to a report from 21st Century Business Herald [1], as of February 20th, 14 enterprises in China have announced investment in the construction of the perovskite industry chain. These 14 enterprises are Xinyi Solar, Xinneng Technology, Jinko Solar, HT-SAAE, Trina Solar, Renesola Yixing, Infinite Energy, Wande Smart Energy, Daqo New Energy, Xilex Semiconductor, Aolong Technology, Baohing Technology, Raynergy Tek and Muliang Energy. Only six enterprises have entered the small-scale trial or pilot stage, which are Xinyi Solar, Xinneng Technology, Jinko Solar, Renesola Yixing, Daqo New Energy and Raynergy Tek. Only Xinyi Solar, Xinneng Technology, and Jinko Solar have entered the 100MW-level pilot stage, while Renesola Yixing, Daqo New Energy and Raynergy Tek currently only have a small-scale trial line production capacity of 10MW, 50MW and 10MW, respectively. Progressing from the 10MW-level trial stage to the 100MW-level pilot stage marks a critical milestone in the industrialization of perovskite, and some industry investors believe that the construction of GW-scale production lines is imminent, which means that the industrialization of perovskite has entered a new phase and investments in perovskite may have the potential for cost recovery. From the perspective of investment direction, perovskite investment can be mainly divided into two categories: module/component and material/equipment, targeting individual enterprises or product materials and equipment in the perovskite industry, respectively. From an industrial perspective, perovskite enterprises that have really made substantial progress in industrialization are not yet listed, and the research and development of some photovoltaic giants is still in the laboratory stage. Therefore, theoretically speaking, there are currently no real perovskite concept enterprises in the secondary market. However, business executives have stated that in certain equipment investment areas, perovskite may have some investment value. Perovskite equipment is distributed in three major areas: vacuum coating equipment, laser equipment, and packaging equipment. The latter two are currently technically mature and can achieve independent control in China, but for vacuum coating equipment, the main issue is the equipment used in the solution coating process in the vacuum coating process, where there is still a significant gap in quality between domestic and imported equipment. Taiwan's Kyopto Optoelectronics [2] has successfully completed the bidding for the perovskite solar leader's vacuum coating equipment project. The company's developed three-chamber composite PVD equipment is the world's first equipment capable of successfully completing a meter-scale (2m*1m) trial production line vacuum coating and meets the requirements of perovskite coating. It can be used in a variety of scenarios such as electronic transmission layers, hole transport layers, back electrodes, and transparent conductive films. This equipment has the characteristics of low temperature and low ion bombardment, which can significantly reduce equipment investment, accelerate the learning curve, improve development process efficiency and flexibility. In addition, Kyopto Optoelectronics has also developed the world's first ST composite equipment used to passivate perovskite layers, which allows the unoxidized functional groups on the surface of the layer to combine and achieve coordination balance, making the perovskite layer more stable. Additionally, Kyopto Optoelectronics has partnered with Taiwan Perovskite Technology (TPSC) to establish Taiwan's first complete perovskite experimental line, and the process technology is developing rapidly, worthy of attention and observation. Reference: 1. https://m.21jingji.com/article/20230221/64d296f04192d1b4b36cce68f5732572_zaker.html 2. Kyopto Optoelectronics official website: https://www.kyopt.com/news-2021-05

Perovskite solar technology has become a new hot topic, with American scientists developing a new method that combines mirrors to improve conversion efficiency and Taiwan's Perovskite Technology Company (TPSC) continuing to promote product development. At the same time, researchers are also exploring new breakthroughs in perovskite solar energy, with recent success in producing perovskite films to improve light responsiveness. In the solar energy industry, silicon solar energy has always been the mainstream, but in recent years, the rise of perovskite solar technology has also attracted industry attention. According to media reports, Taiwan's Perovskite Technology Company (TPSC), whose A4 size perovskite solar cell "Mercury One" completed production line baseline construction on February 9th this year and officially began stable production, has recently completed the first batch of orders, indicating progress in the practical application of perovskite solar technology. A research team from the University of Rochester in the United States found that using perovskite films made with hyperbolic materials can increase the light responsiveness of lead halide perovskites by as much as 250%. The results have been published in the online journal "Advanced Energy Materials." This research achievement will help improve the conversion efficiency of perovskite solar cells and enhance their competitiveness in the future solar energy market. In addition, according to TechNews, American researchers have developed a new mirror structure that is combined with the front surface of perovskite solar cells to improve their conversion efficiency. This new type of perovskite solar cell structure can increase efficiency by more than three times and is expected to be applied in commercial production in the future. Overall, perovskite solar energy as an emerging solar technology has attracted more and more attention. It has many advantages, such as high efficiency, low cost, and flexibility, which may make it an important competitor in the future solar energy market. Reference: [1] https://technews.tw/2023/02/21/ag-mirror-perovskite-solar-cells/ [2] https://wantrich.chinatimes.com/news/20230218900046-420101 [3] https://www.technice.com.tw/outbound/news/38553/

The 2022 Taiwan Perovskite Solar Energy Annual Event came to a perfect end, and the first year of the industry alliance was launched. On the 16th of December, the "Second Taiwan Perovskite Technology and Application Forum" hosted in National Tsinghua University was successfully concluded. The organizer invited Professor Tsutomu Miyasaka, the inventor of Perovskite solar cell, to Taiwan to participate and deliver a speech on "Materials and interface engineering for high performance halide perovskite photovoltaics". According to the organizer, nearly 300 experts from industry, government, academia and research participated in the event, which was almost twice as many as the first forum held in March this year, indicating the rapid development of the industry and the urgency of energy issues. This forum is different from the first forum, which adopts a double-axis mode, namely "Industry Application Forum" and "Technical Forum". The organizer arranged 20 experts from related fields at home and abroad to give speeches. The content covers a wide range from material technology, process development, professional equipment to production line design, and speeches on various applications such as zero-carbon buildings, BIPV solar building integration, and low-carbon agricultural and fishery co-generation. Taiwan Perovskite Solar Corp. Chairman Chen Lai Juh gave a speech on "Mercury 1st: The beginning of large-scale production of Perovskite solar cell", showing a glimpse of the industrialization of Perovskite solar cell. Another highlight of this forum is the launch of the "Taiwan Perovskite Research and Industry Association". Chairman Chen Lai Juh said that more than ten companies have participated as group founders so far, including material suppliers, equipment suppliers, research institutes, academic institutes, solar energy manufacturers, and client-side. The purpose of the alliance is to establish an industry exchange and cooperation platform to build a complete Perovskite industry chain in Taiwan and accelerate the development of the industry, creating a better green energy future for Taiwan.

Researchers at the U.S. Department of Energy’s (DOE’s) National Renewable Energy Laboratory (NREL) made a technological breakthrough and constructed a perovskite solar cell with the dual benefits of being both highly efficient and highly stable. The work was done in collaboration with scientists from the University of Toledo, the University of Colorado–Boulder, and the University of California–San Diego. A unique architectural structure enabled the researchers to record a certified stabilized efficiency of 24% under 1-sun illumination, making it the highest reported of its kind. The highly efficient cell also retained 87% of its original efficiency after 2,400 hours of operation at 55 degrees Celsius. The paper, “Surface Reaction for Efficient and Stable Inverted Perovskite Solar Cells,” appears in the journal Nature. The authors from NREL are Qi Jiang, Jinhui Tong, Ross Kerner, Sean Dunfield, Chuanxiao Xiao, Rebecca Scheidt, Darius Kuciauskas, Matthew Hautzinger, Robert Tirawat, Matthew Beard, Joseph Berry, Bryon Larson, and Kai Zhu. Perovskite, which refers to a crystalline structure, has emerged in the last decade as an impressive means to efficiently capture sunlight and convert it to electricity. Research into perovskite solar cells has been focused to a large degree on how to increase their stability. “Some people can demonstrate perovskites with high stability, but efficiency is lower,” said Zhu, a senior scientist in the Chemistry and Nanoscience Center at NREL. “You ought to have high efficiency and high stability simultaneously. That’s challenging.” The researchers used an inverted architecture, rather than the “normal” architecture that has to date yielded the highest efficiencies. The difference between the two types is defined by how the layers are deposited on the glass substrate. The inverted perovskite architecture is known for its high stability and integration into tandem solar cells. The NREL-led team also added a new molecule, 3-(Aminomethyl) pyridine (3-APy), to the surface of the perovskite. The molecule reacted to the formamidinium within the perovskite to create an electric field on the surface of the perovskite layer. “That suddenly gave us a huge boost of not only efficiency but also stability,” Zhu said. The scientists reported the 3-APy reactive surface engineering can improve the efficiency of an inverted cell from less than 23% to greater than 25%. They also noted the reactive surface engineering stands out as an effective approach to significantly enhance the performance of inverted cells “to new state-of-the-art levels of efficiency and operational reliability.” Funding for the research done at NREL came from the Center for Hybrid Organic-Inorganic Semiconductors for Energy (CHOISE), an Energy Frontier Research Center within DOE’s Office of Basic Energy Sciences, and from the DOE’s Solar Energy Technologies Office. NREL is the U.S. Department of Energy's primary national laboratory for renewable energy and energy efficiency research and developm 資料來源：https://www.nrel.gov/news/press/2022/nrel-led-breakthrough-pushes-perovskite-cell-to-greater-stability-efficiency.html

Economic Daily News-Gu-Zhen Xu, December 21st, 2021 Comparison of new and old methods for solar cell film modification. Provided by TPSC. Kingyoup Optoelectronics launched the world’s first generation of 6-line perovskite vacuum coating machine, which is the world’s largest perovskite-specific production equipment (substrate size 1,850*1,500mm), with a unique reaction chamber and ultra-low substrate temperature control design. Lai-Juh Chen, vice chairman and chief of the strategy office of Kingyoup Optoelectronics, said that this sixth-generation line equipment has been evaluated by world's leading manufacturers and the trial production has been successful. Lai-Juh Chen, who is also the chairman of Taiwan Perovskite Technology, which was established this year, stated that Kingyoup Optoelectronics and Taiwan Perovskite Technology (TPSC) have launched integrated innovative equipment and material technology in response to the third generation of solar energy. Recently at Energy Taiwan exhibition, Lai-Juh Chen announced that "Perovskite solar cells, combined with domestically-made independent equipment, materials, and process one-stop solutions (total solutions), are extremely breakthrough." Lai-Juh Chen pointed out that the biggest challenge for the global perovskite solar cell industry today is how to stably coat the perovskite layer on large-scale substrates. TPSC has successfully developed a new technology that can remove imperfect or defective thin films through special equipment. Through these special equipment processing, the film characteristics are uniform, and the engineering design with convergent photoelectric characteristics can meet the needs of large-area perovskite solar mass production. TPSC cooperated with equipment manufacturer Kingyoup Optoelectronics to develop an exclusive large-area film modification treatment technology, and further developed a unique low-toxic water-based formula. Compared with traditional high-toxic solvent, low-toxic water-based one can greatly reduce the barriers of mass production operability, being a safer and more convenient material to operate, thus allowing more flexibility in the development of large-area mass production equipment in the future. According to Lai-Juh Chen, the low-toxicity aqueous solution formula and the large-area thin-film modification technology have enabled the mass production technology of large-area perovskite solar cells to take a big step forward, which has received enthusiastic responses from industry experts. A few days ago, at the Energy Week exhibition, Lai-Juh Chen and the TPSC chief technical adviser Dr. Tzu-Chien Wei stated that the photoelectric conversion efficiency of the new structure of perovskite solar cells has rapidly increased from 3.8% to nearly 25% within 10 years. It can even keep pace with the long-developed silicon crystal type and third and fifth generation of solar cells. During the fast-growing third-generation solar cell production process, there are some challenges in materials, equipment, and manufacturing processes, which are opportunities for Taiwanese companies to invest… Lai-Juh Chen pointed out that TPSC will establish a large-area pilot line in the future and continue to develop and study the integration of next-generation materials, equipment and manufacturing processes on the pilot line. At the same time, it will also combine with Taiwan’s silicon solar industry to challenge for higher-efficiency next-generation solar cells. ※ 歡迎用「轉貼」或「分享」的方式轉傳文章連結；未經授權，請勿複製轉貼文章內容 原文請詳見經濟日報：https://money.udn.com/money/story/5735/5975930

圖片僅為情境配圖，圖片來源：WIX by Hayley Dunning Researchers have incorporated phosphorene nanoribbons into new types of solar cells, dramatically improving their efficiency. Phosphorene nanoribbons (PNRs) are ribbon-like strands of the 2D material phosphorous, which, similar to graphene, are made of single-atom-thick layers of atoms. PNRs were first produced in 2019, and hundreds of theoretical studies have predicted how their properties could enhance all kinds of devices, including batteries, biomedical sensors, and quantum computers. However, none of these predicted exciting properties have so far been demonstrated in actual devices. Now, for the first time, a team led by Imperial College London and University College London researchers has used PNRs to significantly improve the efficiency of a device – a new kind of solar cell – demonstrating that the ‘wonder material’ may indeed live up to its hype. The details are published today in the Journal of the American Chemical Society. Dr Thomas Macdonald：We are delighted to provide the first experimental evidence of PNRs as a promising route for high-performance solar cells. First experimental evidence Lead researcher Dr Thomas Macdonald, from the Department of Chemistry and the Centre for Processable Electronics at Imperial, said: “Hundreds of theoretical studies have foreseen the exciting properties of PNRs, but no published reports have yet demonstrated these properties, or their translation into improved device performance. “We are therefore delighted to not only provide the first experimental evidence of PNRs as a promising route for high-performance solar cells, but also showcase the versatility of this novel nanomaterial for use in next-generation optoelectronic devices.” The team incorporated the PNRs into solar cells made from perovskites – a new class of materials that hold promise as scientists can easily change how they interact with light to suit a range of applications. Contrary to traditional inflexible silicon-based solar cells, perovskite solar cells can be made from liquid solutions, facilitating low-cost printing into thin, flexible films. Novel nanomaterials, such as PNRs, can be simply printed as an extra layer to improve device functionality and efficiency. By including PNRs, the team were able to produce perovskite solar cells with an efficiency above 21 per cent, on a par with traditional silicon solar cells. They were also able to experimentally verify just how PNRs are able to achieve this improved efficiency. Unique electronic properties They showed that PNRs improve ‘hole mobility’. ‘Holes’ are the opposite partner of electrons in electrical transport, so improving their mobility (a measure of the speed at which they move through the material) helps electrical current move more efficiently between layers of the device. This experimental validation of the power of PNRs, the team say, will help researchers create new design rules for optoelectronic devices – those that emit or detect light. Dr Macdonald said: “Our results show that the predicted functional electronic properties of PNRs indeed translate to improved performance in application. This highlights the genuine importance and utility of this newly discovered nanomaterial and sets the benchmark for PNR-based optoelectronic devices.” Further studies using PNRs in devices will allow researchers to discover more mechanisms for how they can improve performance. The team will also explore how modifying the surface of the nanoribbons could improve the unique electronic properties of the materials. - ‘Phosphorene Nanoribbon-Augmented Optoelectronics for Enhanced Hole Extraction’ by Thomas J. Macdonald et al. is published in the Journal of the American Chemical Society. Article text (excluding photos or graphics) © Imperial College London. 原文請詳見Imperial College London：https://www.imperial.ac.uk/news/232639/wonder-material-phosphorene-nanoribbons-live-hype/#comments

圖片來源：NIU DeKalb, Ill. — Researchers at Northern Illinois University and the U.S. Department of Energy’s (DOE) National Renewable Energy Laboratory (NREL) in Golden, Colorado, are reporting a potential breakthrough that could help speed commercialization of highly promising perovskite solar cells (PSCs) for use in solar panels. In an Oct. 28 brief communication to the journal Nature Sustainability, the scientists describe development of a cost-effective Scotch-tape-like film that can be applied to PSCs and capture 99.9% of leaked lead in the event of solar cell damage. The industry-ready film would help alleviate health and safety concerns without compromising perovskite solar-cell performance or operation, according to the research team. Testing of the lead-absorbing film included submerging damaged cells in water. “Our practical approach mitigates the potential lead-leakage to a level safer than the standard for drinking water,” said NIU Chemistry Professor Tao Xu, who co-led the research with Kai Zhu of NREL’s National Renewable Energy Laboratory. “We can easily apply our lead-absorbing materials to off-the-shelf films currently used to encapsulate silicon-based solar cells at the end of their production, so existing fabrication processes for PSCs would not be disrupted,” Xu added. “At the end of PSC production, the films would be laminated to the solar cell.” An emerging class of solar cells, PSCs are considered rising stars in the field of solar energy because of their high-power conversion efficiency (exceeding 25.5%) and low manufacturing costs. But PSCs are not yet commercially available on a widescale basis because key challenges remain, including potential lead-toxicity issues. Small amounts of water-soluble lead continue to be essential components to the light-absorbing layer of high efficiency PSCs, which must be able to withstand severe weather for commercial viability. Significant lead leakage from damaged cells would cause health and safety concerns. To counter those concerns, the transparent tapes use lead absorbents made with a standard solar ethylene vinyl acetate (EVA) film and a pre-laminated layer of lead-absorbing material. The tape can be attached to both sides of fabricated PSCs, as in the standard encapsulation process used in silicon-based solar cells. Among the tests used to assess the durability of the new technology, the scientists exposed the film-encapsulated PSCs to outdoor, rooftop conditions for three months. Razor blades and hammers were used to then damage the solar cells before they were submerged in water for seven days. The lead-absorbing tapes exhibited a lead-sequestration efficiency of over 99.9%. “Perovskite solar cells hold great hope for a more sustainable future,” Xu said. “This work offers a convenient and industry-ready method to diminish the potential lead leakage from lead-containing PSCs, facilitating future commercialization of perovskite-based photovoltaic technology.” The research was supported by the DOE’s Office of Energy Efficiency and Renewable Energy under the Solar Energy Technology Office. In addition to Xu and Zhu, authors on the communication to Nature Sustainability are NIU Ph.D. students Xun Li and Jianxin Wang and postdoctoral researchers Fei Zhang and Jinhui Tong of NREL’s Chemistry and Nanoscience Center. NREL is leading the commercialization of this new lead-absorbing technology, but interested companies can also contact NIU Innovation Director Luke Sebby and Assistant Director for Technology Transfer Mark Hankins. Media Contact: Tom Parisi 本文來源NIU：https://newsroom.niu.edu/2021/11/02/scientists-develop-lead-absorbing-tape-to-boost-viability-of-rising-star-in-solar-power-industry/

圖片來源：Flickr/David Goehring CC BY 2.0 European Solliance Solar Research (Solliance), a consortium based in the Netherlands, said last week that researchers from three of its partners – the Netherlands Organisation for Applied Scientific Research (TNO), EnergyVille, and the Eindhoven University of Technology – have achieved a 29.2% power conversion efficiency on a transparent bifacial perovskite solar cell combined with a crystalline silicon solar cell in a four-terminal tandem configuration. In April, the consortium achieved a 28.7% record efficiency for the device, but the new results mark a significant improvement. “This was made possible by further increasing the wide-bandgap of the perovskite cells with high near-infrared transparency,” Gianluca Coletti, TNO's program manager for tandem PV technology, told pv magazine. Solliance said the perovskite cell has reached a stabilized efficiency of 17.8% during five-minute, maximum-power-point tracking. “In combination with the Panasonic silicon bottom cell, a new world-record 4T perovskite/Si tandem efficiency of 29.2% is realized,” it said, noting that the efficiency rating refers exclusively to the front side of the cell. The cell is based on a highly near-infrared transparent perovskite cell built by TNO, EnergyVille, and an 11.4%-efficient c-Si interdigitated back contact (IBC) silicon heterojunction (SHJ) cell developed by Japanese electronics manufacturer Panasonic. Solliance hits 29.2% efficiency on perovskite/silicon tandem solar cell TWO WORLD-RECORDS FOR 4T PEROVSKITE TANDEM 本文來源：PV MAGAZINE https://www.pv-magazine.com/2021/11/01/solliance-hits-29-2-efficiency-on-perovskite-silicon-tandem-solar-cell/