Electron Transport Assisted by Transparent Conductive Oxide Elements in Perovskite Solar Cells

Wenqi Zhang; Zhichao Lin; Qingbin Cai; Xiangning Xu; Hongye Dong; Cheng Mu; Jian-Ping Zhang

doi:10.1002/cssc.202102002

Electron Transport Assisted by Transparent Conductive Oxide Elements in Perovskite Solar Cells

ChemSusChem. 2022 Feb 8;15(3):e202102002. doi: 10.1002/cssc.202102002. Epub 2021 Dec 27.

Authors

Wenqi Zhang¹, Zhichao Lin¹, Qingbin Cai¹, Xiangning Xu¹, Hongye Dong¹, Cheng Mu¹, Jian-Ping Zhang¹

Affiliation

¹ Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China.

PMID: 34879176
DOI: 10.1002/cssc.202102002

Abstract

Fluorine and indium elements in F-doped SnO₂ (FTO) and Sn-doped In₂ O₃ (ITO), respectively, significantly contribute toward enhancing the electrical conductivity of these transparent conductive oxides. In this study, fluorine was combined with indium to modify the SnO₂ electron transport layer (ETL) through InF₃ . Consequently, the modified perovskite solar cells (PSCs) showe the favorable alignment of energy levels, improved absorption and utilization of light, enhanced interfacial charge extraction, and suppressed interfacial charge recombination. After InF₃ modification, the open circuit voltage (V_oc ) and fill factor (FF) of the PSC were significantly improved, and the photoelectric conversion efficiency (PCE) reached 21.39 %, far exceeding that of the control PSC (19.62 %).

Keywords: electron transport layer; modification; perovskite solar cells; photovoltaics; tin oxide.

Abstract

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