Controlled n-Doping in Air-Stable CsPbI2Br Perovskite Solar Cells with a Record Efficiency of 16.79%

被引：326
作者：
Han, Yu [1 ]
Zhao, Huan [1 ]
Duan, Chenyang [1 ]
Yang, Shaomin [1 ]
Yang, Zhou [1 ]
Liu, Zhike [1 ]
Liu, Shengzhong [1 ]
机构：
[1] Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Shaanxi Engn Lab Adv Energy Technol, Minist Educ,Shaanxi Key Lab Adv Energy Devices,Sc, Xian 710119, Peoples R China
来源：
ADVANCED FUNCTIONAL MATERIALS | 2020年 / 30卷 / 12期
基金：
中国国家自然科学基金;
关键词：
CsPbI2Br; high efficiency; high open circuit voltage; inorganic perovskite solar cells; n-doping;
D O I：
10.1002/adfm.201909972
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Cesium-based inorganic perovskites, such as CsPbI2Br, are promising candidates for photovoltaic applications owing to their exceptional optoelectronic properties and outstanding thermal stability. However, the power conversion efficiency of CsPbI2Br perovskite solar cells (PSCs) is still lower than those of hybrid PSCs and inorganic CsPbI3 PSCs. In this work, passivation and n-type doping by adding CaCl2 to CsPbI2Br is demonstrated. The crystallinity of the CsPbI2Br perovskite film is enhanced, and the trap density is suppressed after adding CaCl2. In addition, the Fermi level of the CsPbI2Br is changed by the added CaCl2 to show heavy n-type doping. As a result, the optimized CsPbI2Br PSC shows a highest open circuit voltage of 1.32 V and a record efficiency of 16.79%. Meanwhile, high air stability is demonstrated for a CsPbI2Br PSC with 90% of the initial efficiency remaining after more than 1000 h aging in air.
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页数：8
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共 43 条
[1]   Interstitial Mn2+-Driven High-Aspect-Ratio Grain Growth for Low-Trap-Density Microcrystalline Films for Record Efficiency CsPbl2Br Solar Cells [J].
Bai, Dongliang ;
Zhang, Jingru ;
Jin, Zhiwen ;
Bian, Hui ;
Wang, Kang ;
Wang, Haoran ;
Liang, Lei ;
Wang, Qian ;
Liu, Shengzhong Frank .
ACS ENERGY LETTERS, 2018, 3 (04) :970-+
[2]   Understanding Degradation Mechanisms and Improving Stability of Perovskite Photovoltaics [J].
Boyd, Caleb C. ;
Cheacharoen, Rongrong ;
Leijtens, Tomas ;
McGehee, Michael D. .
CHEMICAL REVIEWS, 2019, 119 (05) :3418-3451
[3]   Precise Control of Crystal Growth for Highly Efficient CsPbI2Br Perovskite Solar Cells [J].
Chen, Weijie ;
Chen, Haiyang ;
Xu, Guiying ;
Xue, Rongming ;
Wang, Shuhui ;
Li, Yaowen ;
Li, Yongfang .
JOULE, 2019, 3 (01) :191-204
[4]   Investigation Regarding the Role of Chloride in Organic-Inorganic Halide Perovskites Obtained from Chloride Containing Precursors [J].
Dar, M. Ibrahim ;
Arora, Neha ;
Gao, Peng ;
Ahmad, Shahzada ;
Graetzel, Michael ;
Nazeeruddin, Mohammad Khaja .
NANO LETTERS, 2014, 14 (12) :6991-6996
[5]   Systematic investigation of the impact of operation conditions on the degradation behaviour of perovskite solar cells [J].
Domanski, Konrad ;
Alharbi, Essa A. ;
Hagfeldt, Anders ;
Gratzel, Michael ;
Tress, Wolfgang .
NATURE ENERGY, 2018, 3 (01) :61-67
[6]   Record Open-Circuit Voltage Wide-Bandgap Perovskite Solar Cells Utilizing 2D/3D Perovskite Heterostructure [J].
Gharibzadeh, Saba ;
Nejand, Bahram Abdollahi ;
Jakoby, Marius ;
Abzieher, Tobias ;
Hauschild, Dirk ;
Moghadamzadeh, Somayeh ;
Schwenzer, Jonas A. ;
Brenner, Philipp ;
Schmager, Raphael ;
Haghighirad, Amir Abbas ;
Weinhardt, Lothar ;
Lemmer, Uli ;
Richards, Bryce S. ;
Howard, Ian A. ;
Paetzold, Ulrich W. .
ADVANCED ENERGY MATERIALS, 2019, 9 (21)
[7]   Highly Efficient Perovskite Solar Cells via Nickel Passivation [J].
Gong, Xiu ;
Guan, Li ;
Pan, Haiping ;
Sun, Qiang ;
Zhao, Xiaojuan ;
Li, Hao ;
Pan, Han ;
Shen, Yan ;
Shao, Yong ;
Sun, Lijie ;
Cui, Zhifang ;
Ding, Liming ;
Wang, Mingkui .
ADVANCED FUNCTIONAL MATERIALS, 2018, 28 (50)
[8]   Untapped Potentials of Inorganic Metal Halide Perovskite Solar Cells [J].
Ho-Baillie, Anita ;
Zhang, Meng ;
Lau, Cho Fai Jonathan ;
Ma, Fa-Jun ;
Huang, Shujuan .
JOULE, 2019, 3 (04) :938-955
[9]   Air and thermally stable perovskite solar cells with CVD-graphene as the blocking layer [J].
Hu, Xihong ;
Jiang, Hong ;
Li, Juan ;
Ma, Jiaxin ;
Yang, Dong ;
Liu, Zhike ;
Gao, Fei ;
Liu, Shengzhong .
NANOSCALE, 2017, 9 (24) :8274-8280
[10]   Influence of Radiation on the Properties and the Stability of Hybrid Perovskites [J].
Lang, Felix ;
Shargaieva, Oleksandra ;
Brus, Viktor V. ;
Neitzert, Heinz C. ;
Rappich, Jorg ;
Nickel, Norbert H. .
ADVANCED MATERIALS, 2018, 30 (03)
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