Boosting Photovoltaic Performance and Stability of Super-Halogen-Substituted Perovskite Solar Cells by Simultaneous Methylammonium Immobilization and Vacancy Compensation

doi:10.1021/acsami.9b21074

HFCAS OpenIR

	Boosting Photovoltaic Performance and Stability of Super-Halogen-Substituted Perovskite Solar Cells by Simultaneous Methylammonium Immobilization and Vacancy Compensation
	Xu, Shendong 2; Liu, Guozhen 2,3; Zheng, Haiying 4,5; Xu, Xiaoxiao 2,3; Zhang, Liying 2,3; Xu, Huifen 2,4,5; Zhu, Liangzheng 6; Kong, Fantai2 ; Li, Yongtao 1; Pan, Xu2
	2020-02-19
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
通讯作者	Li, Yongtao(toni-li@163.com) ; Pan, Xu(xpan@rntek.cas.cn)
摘要	Perovskite solar cells (PSCs) are susceptible to intrinsic structural instability associated with the presence of inorganic halide anions and organic cation vacancies, thus leading to the deterioration or even premature failure of devices. Herein, we develop an efficient strategy using super-halogen BH4- substitution to simultaneously immobilize methylammonium and substitute iodide vacancy for high-performance PSCs based on the dihydrogen bonding interactions. The introduced super-halogen BH4- groups not only significantly reduce the vacancy density but also effectively inhibit the decomposition of the CH3NH3+ group by forming perovskite CH3NH3PbI3-x(BH4-)(x). The power conversion efficiency (PCE) of the assembled mesoporous devices is remarkably promoted from 18.43 to 21.10%, accompanied by significant increase of both J(sc) and V-oc without obvious hysteresis. The superior PSCs can retain 90 and 80% of their initial PCE even after being stored for 1200 h under environmental conditions (50 +/- 10% RH) and 240 h at 85 degrees C in the dark, respectively. Moreover, it delivers excellent optical stability under ultraviolet illumination. This work provides an avenue to improve both the long-term stability and photovoltaic performance of PSCs.
关键词	perovskite solar cells super-halogen BH4- vacancy substitution methylammonium immobilization stability
DOI	10.1021/acsami.9b21074
关键词[WOS]	HALIDE PEROVSKITES ; HIGHLY EFFICIENT ; DEGRADATION ; PASSIVATION ; TOLERANCE ; CHEMISTRY ; BEHAVIOR ; IMPACT ; LAYER
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFE0133800] ; National Natural Science Foundation of China[51971002]
项目资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000515214300042
出版者	AMER CHEMICAL SOC
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/103956
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Yongtao; Pan, Xu
作者单位	1.Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China 2.Chinese Acad Sci, Key Lab Photovolta & Energy Conservat Mat, Inst Appl Technol, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China 5.Anhui Univ, Inst Informat Technol, Hefei 230601, Peoples R China 6.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Field Magnet Lab, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Xu, Shendong,Liu, Guozhen,Zheng, Haiying,et al. Boosting Photovoltaic Performance and Stability of Super-Halogen-Substituted Perovskite Solar Cells by Simultaneous Methylammonium Immobilization and Vacancy Compensation[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12.
APA	Xu, Shendong.,Liu, Guozhen.,Zheng, Haiying.,Xu, Xiaoxiao.,Zhang, Liying.,...&Pan, Xu.(2020).Boosting Photovoltaic Performance and Stability of Super-Halogen-Substituted Perovskite Solar Cells by Simultaneous Methylammonium Immobilization and Vacancy Compensation.ACS APPLIED MATERIALS & INTERFACES,12.
MLA	Xu, Shendong,et al."Boosting Photovoltaic Performance and Stability of Super-Halogen-Substituted Perovskite Solar Cells by Simultaneous Methylammonium Immobilization and Vacancy Compensation".ACS APPLIED MATERIALS & INTERFACES 12(2020).