Fully perovskite tandem solar cells exhibit excellent performance and a wide range of applications. However, bridging the gap in power conversion efficiency between small-area and large-area (>1 cm2) devices remains a significant challenge, posing a substantial barrier to the commercialization of fully perovskite tandem solar cells. In light of this, on April 17, 2025, Ke Weijun from Wuhan University published research in Nature Nanotechnology on the use of piracetam to shape wide bandgap perovskite crystals for scalable perovskite tandems. This paper introduces a crystal modifier specifically for wide bandgap perovskites, piracetam, which can homogenize the top wide bandgap sub-cell and aid in constructing efficient large-area tandem solar cells. Piracetam contains amide and pyrrolidone groups, which can initially regulate the nucleation of perovskite, leading to the formation of large-sized grains, preferential (110) orientation, enhanced crystallinity, and uniform optoelectronic properties. During the subsequent annealing process, it further eliminates residual PbI2 and promotes the formation of one-dimensional (Pi)PbI3 (Pi=piracetam) perovskite nanoneedles at grain boundaries and surfaces. Consequently, the certified open-circuit voltage of the single-junction 1.77 eV bandgap solar cell is 1.36 V, with an efficiency of 20.35%. Additionally, the single-ended fully perovskite tandem solar cells, with aperture areas of 0.07 cm2 and 1.02 cm2, achieved efficiencies of 28.71% (stabilized at 28.55%, certified at 28.13%) and 28.20% (stabilized at 28.05%, certified at 27.30%), respectively, indicating a minimal PCE loss of 0.51% when transitioning from small-area to large-area devices. Furthermore, piracetam demonstrates broad applicability across different perovskite compositions, enhancing the efficiency of the single-junction 1.56 eV bandgap counterpart from 23.56% to 25.71%. Therefore, this method provides an effective pathway for scalable and efficient fully perovskite tandem solar cells.Original text:https://www.nature.com/articles/s41565-025-01899-zPerovskite Research Group WebsiteNREL Website:https://www.nrel.gov/pv/cell-efficiency.htmlGratzel Research Group Website:http://lpi.epfl.ch/publicationsSnaith Research Group Website:https://www2.physics.ox.ac.uk/contacts/people/snaith/publicationsYangYang Research Group Website:https://yylab.seas.ucla.edu/publications.htmlHuang Jinsong Research Group Website:https://huangjinsong.wixsite.com/group/publicationsLi Meicheng Research Group Website:https://nemd.ncepu.edu.cn/Qi Yabing Research Group Website:https://groups.oist.jp/emssu/publicationsZhou Huanping Research Group Website:https://happyzhou.wixsite.com/happylabsJin Song Research Group Website:https://jin.chem.wisc.edu/content/song-jinChen Qi Research Group Website:https://cheerslab.net/Ding Liming Research Group Website:http://www.nanoctr.cn/opv/yjcg/Meng Qingbo Research Group Website:http://solar.iphy.ac.cn/index.php/?page_id=5103Zhang Chunfu Research Group Website:https://web.xidian.edu.cn/cfzhang/Jin Young Kim Research Group Website:https://ngel.unist.ac.kr/papers/Nam-Gyu Park Research Group Website:http://ngpl.skku.edu/sub/sub04_01.php?cat_no=37&sNum=1Ye Xuanli Research Group Website:https://www.yipgroup.info/researchTang Jiang Research Group Website:：http://tfsc.wnlo.hust.edu.cn/info/1153/1594.htmSargent Research Group Website:https://light.utoronto.ca/publications/2021-1/Seok Research Group Website:https://seoksi.unist.ac.kr/publication/Zhou Yuanyuan Research Group Website:https://www.alvinyzhou.com/all-papersWang Yang Research Group Website:https://www.x-mol.com/groups/steven_wangyangChen Shulin (Perovskite Transmission Electron Microscopy) Website:http://grzy.hnu.edu.cn/site/index/chenshulin
Zhao Qing Research Group Website:：http://faculty.pku.edu.cn/~vuaQVn/zh_CN/index.htm
Daily updates on perovskite LED world records
Blue lightPerovskiteLED highest EQE 26.4% Maintaining Team: Zhejiang University Di David & Ye Zhizhen & Dai Xingliang Team NewTime:July 17, 2024
Red light perovskite LED highest EQE 32.14%
Maintaining Team: Soochow University Shen Yang & Tang Jianxin & East China Normal University Li Yanqing Update Time:September 2, 2024Greenlight perovskiteLED highest EQE 31% Maintaining Team:South China University of Technology Chen Jiangshan & Ma Dongge & University of Macau Xing Guichuan Update Time:September 23, 2024Large-area green light quasi-two-dimensional perovskite LED highest EQE 16.4% (9.0 cm2） Maintaining Team: Nankai University Yuan Mingjian Team Update Time:April 13, 2021Fully inorganic green lightperovskite LED highest EQE 16.45% Maintaining Team:Huaqiao University Wei Zhanhua Team and their collaborative team Southern University of Science and Technology Dan Wu & Kai Wang Team Update Time:April 1thPerovskite LED stability record half-life 2400 hours Maintaining Team:University of Toronto, CanadaSargent Team Update Time:September 20, 2021
Perovskite solar cell world records daily updates
Perovskite solar cell highest certified photoelectric conversion efficiency 26.95% Maintaining Unit: Soochow University Peng Jun & University of New South Wales
Perovskite/silicon tandem solar cell highest certified photoelectric conversion efficiency 34.6% Maintaining Unit::LONGi
Perovskite/CIGS tandem solar cell highest certified photoelectric conversion efficiency 24.2% Maintaining Unit:GermanyHelmholtz Center Berlin（HZB）1cm² Perovskite solar cell highest photoelectric conversion efficiency 26.50% Maintaining Unit:Guangyin Technology12.45cm² Perovskite solar cell highest photoelectric conversion efficiency 24.71%Maintaining Unit:Chinese Academy of Sciences Institute of Physics Meng Qingbo Team715.1cm² Perovskite solar cell highest photoelectric conversion efficiency 22.46% Maintaining Unit:Shanghai Jiao Tong University Zhao Yixin900cm² Perovskite solar cell highest photoelectric conversion efficiency 22.86% Maintaining Unit:Maikou EnergyIndoor photovoltaic highest efficiency 44.72% Maintaining Team:Jinan University Wang Yousheng & Mai Yaohua Team Update Time:January 12, 2024
Perovskite indoor photovoltaic module highest certified aperture area efficiency 34.94%/National Photovoltaic Industry Measurement Testing Center certification (12.80 cm2) Maintaining Team:Jinan University Professor Mai Yaohua Team
Perovskite/perovskite tandem solar cell highest photoelectric conversion efficiency/JET certification 28.2% (1.038cm2 Maintaining Team:Southeast University & Renshuo OptoelectronicsPerovskite/perovskite tandem solar cell highest certified efficiency 30.1%（0.04934cm2）Maintaining Team:Southeast University & Renshuo OptoelectronicsPerovskite/OPV tandem solar cell highest certified efficiency 25.56% Maintaining Team:City University of Hong Kong ZengXiaocheng &Zhu Zonglong&University of Science and Technology of China Yang Shangfeng Update Time: September 23, 2024Perovskite solar cell light-induced degradation (LID) stability: tested by IEC61215:2016 standard, only 5% degradation of initial efficiency after 500hPerovskite integrated cell highest efficiency 24% Maintaining Team:Southern University of Science and TechnologyXu Baomin Team & Guo Xugang Team & Xingzhu Wang Team& North CarolinaHuang Jinsong Team Update Time:August 18, 2022
Outdoor prepared perovskite solar cell highest efficiency 25.74% Maintaining Team:North China Electric Power University Li Meicheng Team Update Time:March 26, 2024
Perovskite solar cell low-temperature operation highest efficiency 26.12% Maintaining Team：Shaanxi Normal University Zhao Kui Team Update Time:August 31, 2023Transitional perovskite solar cell highest efficiency 26.95% Maintaining Team:Northwestern University, USA & University of Toronto, CanadaSargent Team
Based on TiO2 planar perovskite solar cell highest efficiency 24.8% Maintaining Team:North China Electric Power UniversityLi Meicheng Team Update Time:August 4, 2022
Mixed tin-lead perovskite solar cell highest efficiency 24.13% Maintaining Team:Shanghai Jiao Tong University Chen HanTeam Update Time:August 12, 2024
Wide bandgap (1.67 eV) perovskite solar cell highest efficiency 24.48% Maintaining Team:Huaqiao University Xie Liqiang & Wei Zhanhua &Xu Xipeng Update Time:December 4, 2024
Flexible perovskite solar cell highest efficiency 26.61% Maintaining Team：Jiujiang Ruoshuo Optoelectronic Technology Co., Ltd. Update Time:Time:September 28, 2024Two-dimensional perovskite solar cell (n=5) highest efficiency 22.73% Maintaining Team:Nanchang University Hu Ting & Chen Yi Wang Update Time:October 15, 2024FAPbI3highest open-circuit voltage 1.18V Maintaining Team:UNIST, Ulsan National Institute of Science and Technology, South KoreaChangduk Yang Team Update Time:September 25, 2020CsPbI3highest open-circuit voltage 1.33V Maintaining Team:ChinaInstitute of Semiconductors, Chinese Academy of SciencesYao Jingbi Team Update Time:November 23, 2020
CsPbBr3highest open-circuit voltage 1.702V Maintaining Team:ChinaJinan UniversityDuan Jialong & Tang Qunwei Team Update Time:August 8, 2021
CsPbI2Brhighest open-circuit voltage 1.45V Maintaining Team:Germany Erlangen-Nuremberg UniversityNing Li & Christoph J. Brabec Team Update Time:October 24, 2022
CsPbIBr2highest open-circuit voltage 1.54V Maintaining Team:Japan Yokohama University Zhanglin Guo &Tsutomu Miyasaka Team Update Time:August 21, 2022
Undoped hole transport material formal device highest efficiency 24.6% Maintaining Team:Korea University of Science and Technology Eui Hyuk Jung & Jun Hong Noh Team Update Time:March 2, 2021
Mixed tin perovskite solar cell highest efficiency 15.33% Maintaining Team:University of Electronic Science and Technology Liang Wang & Shen Qing & Shuzi Hayase & Process Engineering Research Institute Qingqing Miao & Fudan University Shuzhang Yang Update Time:December 5, 2024
Fully inorganic perovskite solar cell highest efficiency 22.2% Maintaining Team:Shanxi Normal University Tian Qingwen & Liu Shengzhong Update Time:November 20, 2024
Fully inorganic transperovskite solar cell highest certified efficiency 20.2% Maintaining Team:Shanxi Normal University Xiang Wanchun & Dalian Institute of Chemical Physics Liu Shengzhong & Korea Ulsan National Institute of Science and Technology Sang Il Seok Update Time:February 3, 2025
CsPbBr3perovskite solar cell highest efficiency 11.08% Maintaining Team:ChinaJinan UniversityDuan Jialong & Tang Qunwei Team Update Time:August 8, 2021CsSnI3perovskite solar cell highest efficiency 11.21% Maintaining Team:South China University of Technology Yan Keyou Update Time:March 30, 2023FASnI3perovskite solar cell highest efficiency 14.3% Maintaining Team:Shanghai University of Science and Technology Ning Zhijun & Mi Qixi Team Update Time:May 24, 2022Spray-coated perovskite solar cell highest efficiency 19.4% Maintaining Team:University of Sheffield, UK David G. Lidzey Team Update Time:April 20, 2020
Blade-coated perovskite solar cell highest efficiency 23.19% Maintaining Team:Hong Kong Polytechnic University Liu Kuan & Li Gang Teamand their collaborative team Huang Bolong Team Update Time:March 14, 2022
CVD depositedperovskite solar cell highest efficiency 21.98% Maintaining Team:Okinawa Institute of Science and Technology (OIST) Professor Qi Yabing Team & Hefei University of Technology Professor Tong Guoqing Team Update Time:April 14, 2023
Vacuum deposited perovskite solar cell highest efficiency 24.4% Maintaining Team:Tsinghua UniversityYi ChenyiTeam Update Time:July 15, 2022
Carbon electrode perovskite solar cell highest efficiency 22.45%Maintaining Team：Dalian University of Technology Yanying Shi & Wang Yudi & Shi Yantao Update Time:September 23, 2024
Undoped hole transport material carbon electrode fully inorganic perovskite solar cell highest efficiency 19.65％ Maintaining Team:South China Agricultural University Rao Huashang & Zhong Xinhua Team Update Time:January 13, 2025
CsPbIBr2perovskite solar cell highest efficiency 12.05％ Maintaining Team:ChinaJinan University Duan Jialong & Tang Qunwei Team Update Time:April 22, 2022Undoped hole transport material perovskite solar cell highest efficiency 20.1％ Maintaining Team:South China Agricultural University Pan Zhenxiao & Zhong Xinhua Update Time:May 31, 2024Fully inorganic perovskitesolar cell trans device highest efficiency 21.24% Maintaining Team：Shaanxi Normal University Bian Hongtao & Liu Zhike Update Time:September 5, 2024
CsPbI2Brperovskite solar cell highest efficiency 18.14% Maintaining Team:Beijing University of Chemical Technology Li Minghua&Chemistry Institute Hu Jinsong Update Time:January 17, 2024
Perovskite quantum dot solar cell highest efficiency 18.21% Maintaining Team:Soocow University Yuan Jianyu Update Time:January 5, 2025
Double perovskite solar cell highest efficiency 6.37% Maintaining Team:Beijing University of Technology Lu Yue & Sui Manling Teamand their collaborative team Beijing Computational Science Research Center Wei Suhuai Team Update Time:June 13, 2022
Note: Each blue text part contains hyperlinks, and each hyperlink has a reference, which will not be individually marked here. Additionally, if there are any records not summarized or new breakthroughs, please leave a message at the end or in the background, and updates will be made daily. The largest domestic perovskite battery QQ group, WeChat group add WeChat lili514091, welcome to join
Click to read the original text to obtain the original textFor academic sharing only, if there is any infringement,please contact for deletion.