Lead‐Free Halide Perovskite Solar Cells with High Photocurrents Realized Through Vacancy Modulation

作者：Mulmudi Hemant Kumar, Dharani Sabba, Wei Lin Leong, Pablo P. Boix, Rajiv Ramanujam Prabhakar, Tom Baikie, Shi Chen, Hong Ding, R. Ramesh, Mark Asta, Michaël Grätzel, Subodh G. Mhaisalkar, Nripan Mathews · 发表于：Advanced Materials · 年份：2014 · DOI：10.1002/adma.201401991 · 被引用次数：1209 · 研究领域：Perovskite Materials and Applications、Conducting polymers and applications、Chalcogenide Semiconductor Thin Films

Lead free perovskite solar cells based on a CsSnI3 light absorber with a spectral response from 950 nm is demonstrated. The high photocurrents noted in the system are a consequence of SnF2 addition which reduces defect concentrations and hence the background charge carrier density.