Enhanced efficiency of perovskite solar cells by introducing controlled chloride incorporation into MAPbI3 perovskite films

被引：25

作者：

Cao, Xiaobing ^{[1
]}

Zhi, Lili ^{[2
]}

Jia, Yi ^{[3
]}

Li, Yahui ^{[1
]}

Zhao, Ke ^{[1
]}

Cui, Xian ^{[1
]}

Ci, Lijie ^{[2
]}

Ding, Kongxian ^{[4
]}

Wei, Jinquan ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China

[3] Qian Xueshen Lab Space Technol, Youyi Rd 104, Beijing 100094, Peoples R China

[4] Shenzhen Jiawei Photovolta Lighting Co Ltd, New Ind Zone 1-4,Fuping Rd, Shenzhen 518112, Guangdong, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2018年 / 275卷

关键词：

Perovskite films; Mixed halides; Lead chloride; Additives; Solar cell; MIXED HALIDE PEROVSKITE; OPEN-CIRCUIT VOLTAGE; ACID-BASE ADDUCT; CRYSTAL-GROWTH; PERFORMANCE; CRYSTALLIZATION; PASSIVATION; MORPHOLOGY; LAYER;

D O I：

10.1016/j.electacta.2018.04.123

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Compositional engineering of mixed halides is an effective approach to fabricate highly efficient perovskite solar cell. The mixed halide perovskite of MAPbI(3-x)Cl(x) attracts a great of attentions due to its excellent optoelectronic properties. However, the role of chlorine in MAPbI(3-x)Cl(x) is still under discussion by now. Here we introduce PbCl2 as additives into PbI2/DMF solution to study its effects on the formation of MAPbI(3-x)Cl(x) film, which is fabricated from Lewis acid-base adducts through a modified two step method. We demonstrate that the chloride ions have positive roles in fabrication of high quality perovskite MAPbI(3-x)Cl(x) films, characterized by high crystallization, strong grain orientation, large grain size and lower trap densities. Compared to perovskite solar cells without chloride incorporation, the performance of solar cells based on MAPbI(3-x)Cl(x) improves significantly due to its high carrier mobility, efficient carrier transportation and low recombination in device. (c) 2018 Elsevier Ltd. All rights reserved.

引用

页码：1 / 7

页数：7

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