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Low-Temperature Processed Non-TiO2 Electron Selective Layers for Perovskite Solar Cells

Abstract

Organic-inorganic halide perovskite solar cells (PSCs) have been paid much attention in recent years and their power conversion efficiency (PCE) has rapidly improved from 3.8% to 22.7%. However, the commonly used electron selective layer (ESL), TiO2, requires a high-temperature post-treatment during its preparation process, which is not compatible with the flexible PSCs on the plastic substrates. Moreover, it is energy intensive and not suitable for the low-cost mass production of PSCs. Developing low-temperature processable ESLs can solve these problems and realize the all-low-temperature fabrication of PSCs. Therefore, in this review, the current progress in low-temperature processed ESLs, especially non-TiO2 inorganic, organic materials and quantum dots (QDs), such as SnO2, ZnO, WOx, CeOx, Nb2O5, In2O3, CdS, Bi2S3, In2S3, Zn2SnO4, fullerene, non-fullerene, CdSe QDs, etc., are summarized. Their preparation methods, properties and applications for use in PSCs are highlighted. Several results by our group are also introduced. These low-temperature processed ESLs will provide more possibilities for implementing the all-low-temperature fabrication of PSCs with high performances.

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Publication details

The article was received on 07 Dec 2017, accepted on 30 Jan 2018 and first published on 01 Feb 2018


Article type: Review Article
DOI: 10.1039/C7TA10742K
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Low-Temperature Processed Non-TiO2 Electron Selective Layers for Perovskite Solar Cells

    Z. Guo, L. Gao, C. Zhang, Z. Xu and T. Ma, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C7TA10742K

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