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Lead-free halide perovskite solar cells with high photocurrents realized through vacancy modulation.

Lead-free halide perovskite solar cells with high photocurrents realized through vacancy modulation.

Advanced materials (Deerfield Beach, Fla.) (2014-09-13)

Mulmudi Hemant Kumar, Sabba Dharani, Wei Lin Leong, Pablo P Boix, Rajiv Ramanujam Prabhakar, Tom Baikie, Chen Shi, Hong Ding, Ramamoorthy Ramesh, Mark Asta, Michael Graetzel, Subodh G Mhaisalkar, Nripan Mathews

摘要

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.

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