Highly efficient p-i-n perovskite solar cells that endure temperature variations

• DOI: 10.1126/science.add7331
• Publication Date: 2023-01-26T18:58:32Z
• Authors: Guixiang Li; Zhenhuang Su; Laura Canil; Declan Hughes; Mahmoud H. Aldamasy; Janardan Dagar; Sergei Trofimov; Luyao Wang; Weiwei Zuo; José J. Jerónimo-...; Mahdi Malekshahi ...; Chenyue Wang; Rui Zhu; Zuhong Zhang; Feng Yang; Giuseppe Nasti; Boris Naydenov; Wing C. Tsoi; Zhe Li; Xingyu Gao; Zhaokui Wang; Yu Jia; Eva Unger; Michael Saliba; Meng Li; Antonio Abate
• Keywords: Thermal Stability

Daily temperature variations induce phase transitions and lattice strains in halide perovskites, challenging their stability solar cells. We stabilized the perovskite black improved cell performance using ordered dipolar structure of β-poly(1,1-difluoroethylene) to control film crystallization energy alignment. demonstrated p-i-n cells with a record power conversion efficiency 24.6% over 18 square millimeters 23.1% 1 centimeter, which retained 96 88% after 1000 hours 1-sun maximum point tracking at 25° 75°C, respectively. Devices under rapid thermal cycling between -60° +80°C showed no sign fatigue, demonstrating impact on operational