| Literature DB >> 27622903 |
Weiqiang Liao1,2, Dewei Zhao1, Yue Yu1, Niraj Shrestha1, Kiran Ghimire1, Corey R Grice1, Changlei Wang1,3, Yuqing Xiao3, Alexander J Cimaroli1, Randy J Ellingson1, Nikolas J Podraza1, Kai Zhu4, Ren-Gen Xiong2, Yanfa Yan1.
Abstract
Mixed tin (Sn)-lead (Pb) perovskites with high Sn content exhibit low bandgaps suitable for fabricating the bottom cell of perovskite-based tandem solar cells. In this work, we report on the fabrication of efficient mixed Sn-Pb perovskite solar cells using precursors combining formamidinium tin iodide (FASnI3) and methylammonium lead iodide (MAPbI3). The best-performing cell fabricated using a (FASnI3)0.6(MAPbI3)0.4 absorber with an absorption edge of ∼1.2 eV achieved a power conversion efficiency (PCE) of 15.08 (15.00)% with an open-circuit voltage of 0.795 (0.799) V, a short-circuit current density of 26.86(26.82) mA/cm(2), and a fill factor of 70.6(70.0)% when measured under forward (reverse) voltage scan. The average PCE of 50 cells we have fabricated is 14.39 ± 0.33%, indicating good reproducibility.Entities:
Year: 2016 PMID： 27622903 DOI： 10.1021/jacs.6b08337
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419