Correlation between morphology and charge carrier dynamics for solubility of methylammonium lead halide in efficient perovskite photovoltaics

Byung Gi Kim; Woongsik Jang; Jae Sang Cho; Dong Hwan Wang

doi:10.1117/12.2571459

20 August 2020 Correlation between morphology and charge carrier dynamics for solubility of methylammonium lead halide in efficient perovskite photovoltaics

Byung Gi Kim, Woongsik Jang, Jae Sang Cho, Dong Hwan Wang

Author Affiliations +

Proceedings Volume 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI; 114741Z (2020) https://doi.org/10.1117/12.2571459
Event: SPIE Organic Photonics + Electronics, 2020, Online Only

Conference Poster

Abstract

Although many efforts have been made to achieve a uniform perovskite film, the use of CH3NH3I:PbI2:DMSO (1:1:1) has been limited. This is because the intermediate phase and crystal phase can coexist in the precursor solution.[1] To solve this, a complex process was inevitably needed to ensure the uniformity.[2] Here, the quality of CH3NH3PbI3 film is simply improved via controlling nonstoichiometric molar ratio.[3] The uniform and dense perovskite layer was successfully fabricated by controlling the perovskite adduct formation. This demonstrated a critical point to improve current density and power conversion efficiency in perovskite photovoltaics. The synergistic effect of morphology and electrical properties has proved the optimized solubility for generating high current densities in inverted perovskite solar cells [1] L. Xie et al., Phys. Chem. Chem. Phys., 2017, 19, 1143 [2] K. Fu et al., Nanoscale, 2016, 8 4181 [3] B. G. Kim et al., Sol. Energy Mater. Sol. Cells, 2019, 192, 24

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Byung Gi Kim, Woongsik Jang, Jae Sang Cho, and Dong Hwan Wang "Correlation between morphology and charge carrier dynamics for solubility of methylammonium lead halide in efficient perovskite photovoltaics", Proc. SPIE 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI, 114741Z (20 August 2020); https://doi.org/10.1117/12.2571459

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