A Universal Double-Side Passivation for High Open-Circuit Voltage in Perovskite Solar Cells: Role of Carbonyl Groups in Poly(methyl methacrylate)
Peng, Jun; Khan, Jafar I.; Liu, Wenzhu; Ugur, Esma; Duong, The; Wu, Yiliang; Shen, Heping; Wang, Kai; Dang, Hoang; Aydin, Erkan; Yang, Xinbo; Wan, Yimao; Weber, Klaus J.; Catchpole, Kylie; Laquai, Frédéric; De Wolf, Stefaan; White, Thomas
The performance of state‐of‐the‐art perovskite solar cells is currently limited by defect‐induced recombination at interfaces between the perovskite and the electron and hole transport layers. These defects, most likely undercoordinated Pb and halide ions, must either be removed or passivated if cell efficiencies are to approach their theoretical limit. In this work, a universal double‐side polymer passivation approach is introduced using ultrathin poly(methyl methacrylate) (PMMA) films. Very...[Show more]
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|Source:||Advanced Energy Materials|
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