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Abnormal absorption onset shift of CH3NH3PbI3 film by adding PbBr2 into its precursor and its effect on photovoltaic performance

文献类型：期刊论文

作者Wei, Qingbo1,2; Yang, Zhou1; Yang, Dong1; Fu, Feng2; Liu, Shengzhong (Frank)1,3
刊名JOURNAL OF POWER SOURCES
出版日期2019-10-15
卷号437页码:8
ISSN号0378-7753
关键词Perovskite Solar cell Thin film Thermal stability Bromine doping
DOI10.1016/j.jpowsour.2019.226914
通讯作者Yang, Zhou(zyang@snnu.edu.cn) ; Liu, Shengzhong (Frank)(liusz@snnu.edu.cn)
英文摘要High quality CH3NH3PbI(3-x)Brx perovskite film with full surface coverage and fewer trap states was prepared using a single-step deposition process and PbBr2 doped perovskite precursor solution. Specifically, the thin film surface becomes rougher and the grain size gets larger as the PbBr2 concentration was increased from 1% to 10 mol%. Ultraviolet-visible spectroscopy (UV-vis) and incident photon-to-current efficiency (IPCE) spectra show that abnormal absorption onset shifts to longer wavelength with increasing the content of PbBr2, because the larger grain size can reduce the stress accumulated in the lattice over the Pb-I bond angle. It is surprising to see that when 5 mol% of PbBr2 was used, the CH3NH3PbI3 (MAPbI(3)) shows the best thermal stability, with the decomposition onset increased by about 20 degrees C. The photoluminescence (PL) peak of the CH3NH3PbI(3-x)Brx film shifts to smaller wavelength as more PbBr2 was used owing to decreased trap states in perovskite films. It is found that at the optimal PbBr2 content of 5 mol%, the CH3NH3PbI(3-x)Brx based solar cell gives open-circuit voltage of 1.08 V with power conversion efficiency (PCE) as high as 18.97%, about 16.6% higher than the device based on the MAPbI(3) without Br.
WOS关键词PEROVSKITE SOLAR-CELLS ; HYBRID-PEROVSKITE ; HALIDE PEROVSKITES ; EFFICIENT ; DEPOSITION ; CRYSTALLIZATION ; LAYER ; TEMPERATURE ; BEHAVIOR
资助项目National University Research Fund[GK261001009] ; National Natural Science Foundation of China[61604090] ; National Natural Science Foundation of China[21663030] ; Shaanxi Technical In-novation Guidance Project[2018HJCG-17] ; Changjiang Scholar and Innovative Research Team[IRT_14R33] ; Overseas Talent Recruitment Project[B14041] ; Chinese National 1000-talent-plan program ; Key Laboratory of Education department of Shaanxi Province[15JS120] ; Yan'an University[YDBK2017-14]
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种英语
出版者ELSEVIER
WOS记录号WOS:000486355400058
资助机构National University Research Fund ; National University Research Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shaanxi Technical In-novation Guidance Project ; Shaanxi Technical In-novation Guidance Project ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; Overseas Talent Recruitment Project ; Overseas Talent Recruitment Project ; Chinese National 1000-talent-plan program ; Chinese National 1000-talent-plan program ; Key Laboratory of Education department of Shaanxi Province ; Key Laboratory of Education department of Shaanxi Province ; Yan'an University ; Yan'an University ; National University Research Fund ; National University Research Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shaanxi Technical In-novation Guidance Project ; Shaanxi Technical In-novation Guidance Project ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; Overseas Talent Recruitment Project ; Overseas Talent Recruitment Project ; Chinese National 1000-talent-plan program ; Chinese National 1000-talent-plan program ; Key Laboratory of Education department of Shaanxi Province ; Key Laboratory of Education department of Shaanxi Province ; Yan'an University ; Yan'an University ; National University Research Fund ; National University Research Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shaanxi Technical In-novation Guidance Project ; Shaanxi Technical In-novation Guidance Project ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; Overseas Talent Recruitment Project ; Overseas Talent Recruitment Project ; Chinese National 1000-talent-plan program ; Chinese National 1000-talent-plan program ; Key Laboratory of Education department of Shaanxi Province ; Key Laboratory of Education department of Shaanxi Province ; Yan'an University ; Yan'an University ; National University Research Fund ; National University Research Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shaanxi Technical In-novation Guidance Project ; Shaanxi Technical In-novation Guidance Project ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; Overseas Talent Recruitment Project ; Overseas Talent Recruitment Project ; Chinese National 1000-talent-plan program ; Chinese National 1000-talent-plan program ; Key Laboratory of Education department of Shaanxi Province ; Key Laboratory of Education department of Shaanxi Province ; Yan'an University ; Yan'an University
源URL[http://cas-ir.dicp.ac.cn/handle/321008/172633]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Yang, Zhou; Liu, Shengzhong (Frank)
作者单位1.Shaanxi Normal Univ, Sch Chem & Chem Engn, Shaanxi Engn Lab Adv Energy Technol, Key Lab Appl Surface & Colloid Chem,Minist Educ, Xian 710062, Shaanxi, Peoples R China
2.Yanan Univ, Coll Chem & Chem Engn, Key Lab Chem React Engn Shaanxi Prov, Yanan 716000, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Qingbo,Yang, Zhou,Yang, Dong,et al. Abnormal absorption onset shift of CH3NH3PbI3 film by adding PbBr2 into its precursor and its effect on photovoltaic performance[J]. JOURNAL OF POWER SOURCES,2019,437:8.
APA Wei, Qingbo,Yang, Zhou,Yang, Dong,Fu, Feng,&Liu, Shengzhong .(2019).Abnormal absorption onset shift of CH3NH3PbI3 film by adding PbBr2 into its precursor and its effect on photovoltaic performance.JOURNAL OF POWER SOURCES,437,8.
MLA Wei, Qingbo,et al."Abnormal absorption onset shift of CH3NH3PbI3 film by adding PbBr2 into its precursor and its effect on photovoltaic performance".JOURNAL OF POWER SOURCES 437(2019):8.

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来源：大连化学物理研究所

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