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

• Main Authors: Mhaisalkar, Subodh Gautam, Leong, Wei Lin, Shi, Chen, Boix, Pablo P., Ding, Hong, Kumar, Mulmudi Hemant, Dharani, Sabba, Prabhakar, Rajiv Ramanujam, Baikie, Tom, Ramesh, Ramamoorthy, Asta, Mark, Graetzel, Michael, Mathews, Nripan
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Science::Chemistry::Physical chemistry
• Online Access: https://hdl.handle.net/10356/100259; http://hdl.handle.net/10220/24090
• Institution: Nanyang Technological University

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.