Single-Source Vapor-Deposited Cs 2 AgBiBr 6 Thin Films for Lead-Free Perovskite Solar Cells

Lead-free double perovskites have been considered as a potential environmentally friendly photovoltaic material for substituting the hybrid lead halide perovskites due to their high stability and nontoxicity. Here, lead-free double perovskite Cs AgBiBr films are initially fabricated by single-source...

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Bibliographic Details
Published inNanomaterials (Basel, Switzerland) Vol. 9; no. 12
Main Authors Fan, Ping, Peng, Huan-Xin, Zheng, Zhuang-Hao, Chen, Zi-Hang, Tan, Shi-Jie, Chen, Xing-Ye, Luo, Yan-Di, Su, Zheng-Hua, Luo, Jing-Ting, Liang, Guang-Xing
Format Journal Article
LanguageEnglish
Published Switzerland 11.12.2019
Subjects
perovskite solar cell
thin film
lead-free
single-source vapor deposition
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Summary:Lead-free double perovskites have been considered as a potential environmentally friendly photovoltaic material for substituting the hybrid lead halide perovskites due to their high stability and nontoxicity. Here, lead-free double perovskite Cs AgBiBr films are initially fabricated by single-source evaporation deposition under high vacuum condition. X-ray diffraction and scanning electron microscopy characterization show that the high crystallinity, flat, and pinhole-free double perovskite Cs AgBiBr films were obtained after post-annealing at 300 °C for 15 min. By changing the annealing temperature, annealing time, and film thickness, perovskite Cs AgBiBr solar cells with planar heterojunction structure of FTO/TiO /Cs AgBiBr /Spiro-OMeTAD/Ag achieve an encouraging power conversion efficiency of 0.70%. Our preliminary work opens a feasible approach for preparing high-quality double perovskite Cs AgBiBr films wielding considerable potential for photovoltaic application.
ISSN:2079-4991
2079-4991