Single-Source Vapor-Deposited Cs2AgBiBr6 Thin Films for Lead-Free Perovskite Solar Cells

被引：84

作者：

Fan, Ping ^{[1
]}

Peng, Huan-Xin ^{[1
]}

Zheng, Zhuang-Hao ^{[1
]}

Chen, Zi-Hang ^{[1
]}

Tan, Shi-Jie ^{[1
]}

Chen, Xing-Ye ^{[1
]}

Luo, Yan-Di ^{[1
]}

Su, Zheng-Hua ^{[1
]}

Luo, Jing-Ting ^{[1
]}

Liang, Guang-Xing ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen Key Lab Adv Thin Films & Applicat, Shenzhen 518060, Guangdong, Peoples R China

来源：

NANOMATERIALS | 2019年 / 9卷 / 12期

基金：

中国国家自然科学基金;

关键词：

lead-free; perovskite solar cell; thin film; single-source vapor deposition; HALIDE DOUBLE PEROVSKITES; PHASE; TRANSPORT; DYNAMICS; LENGTHS; BR;

D O I：

10.3390/nano9121760

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 Cs2AgBiBr6 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 Cs2AgBiBr6 films were obtained after post-annealing at 300 degrees C for 15 min. By changing the annealing temperature, annealing time, and film thickness, perovskite Cs2AgBiBr6 solar cells with planar heterojunction structure of FTO/TiO2/Cs2AgBiBr6/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 Cs2AgBiBr6 films wielding considerable potential for photovoltaic application.

引用

页数：13

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