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Methylamine Gas Treatment Affords Improving Semitransparency, Efficiency, and Stability of CH3NH3PbBr3-Based Perovskite Solar Cells
Solar RRL ( IF 7.9 ) Pub Date : 2021-07-01 , DOI: 10.1002/solr.202100277
Ajay Singh 1 , Fabio Matteocci 2 , Hongwei Zhu 3 , Daniele Rossi 2 , Salim Mejaouri 4, 5 , Stefania Cacovich 4, 6 , Matthias Auf Der Maur 2 , Frédéric Sauvage 7 , Alessio Gagliardi 1 , Michael Grätzel 3 , Aldo Di Carlo 2
Affiliation  

High bandgap semitransparent solar cells based on CH3NH3PbBr3 perovskites are attractive for building integration, tandem cells, and electrochemical applications. The lack of control of the CH3NH3PbBr3 perovskite growth limit the exploitation of CH3NH3PbBr3-based perovskite solar cells. Herein, a post-treatment is carried out after the initial CH3NH3PbBr3 crystallization based on methylamine gas that drastically enhances the perovskite quality leading to a highly crystalline film with improved average visible transmittance (AVT) close to 56%. Opaque devices showed outstanding results in terms of open-circuit voltage and power conversion efficiency (PCE) reaching 1.54 V and 9.2%, respectively. These achievements are ascribed to a film with reduced morphological defects and better interface quality and reduced nonradiative pathways. For the first time, the fabrication of semitransparent CH3NH3PbBr3-based solar cells is demonstrated reaching a maximum PCE equal to 7.6%, an AVT of the full stack device of 52%, and an excellent light stability at maximum-power point tracking.

中文翻译:

甲胺气体处理可提高基于 CH3NH3PbBr3 的钙钛矿太阳能电池的半透明性、效率和稳定性

基于 CH 3 NH 3 PbBr 3钙钛矿的高带隙半透明太阳能电池对于建筑集成、串联电池和电化学应用具有吸引力。CH 3 NH 3 PbBr 3钙钛矿生长缺乏控制限制了基于CH 3 NH 3 PbBr 3的钙钛矿太阳能电池的开发。这里,在初始 CH 3 NH 3 PbBr 3之后进行后处理基于甲胺气体的结晶可显着提高钙钛矿质量,从而形成高度结晶的薄膜,平均可见光透射率 (AVT) 提高接近 56%。不透明器件在开路电压和功率转换效率 (PCE) 方面表现出色,分别达到 1.54 V 和 9.2%。这些成就归功于具有减少的形态缺陷和更好的界面质量和减少的非辐射路径的薄膜。首次证明半透明 CH 3 NH 3 PbBr 3基太阳能电池的制造达到最大 PCE 等于 7.6%,全堆栈器件的 AVT 为 52%,以及在最大功率下的出色光稳定性点跟踪。
更新日期:2021-09-09
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