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Boosting Photovoltaic Performance and Stability of Super-Halogen-Substituted Perovskite Solar Cells by Simultaneous Methylammonium Immobilization and Vacancy Compensation
Xu, Shendong2; Liu, Guozhen2,3; Zheng, Haiying4,5; Xu, Xiaoxiao2,3; Zhang, Liying2,3; Xu, Huifen2,4,5; Zhu, Liangzheng6; Kong, Fantai2; Li, Yongtao1; Pan, Xu2
2020-02-19
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Corresponding AuthorLi, Yongtao(toni-li@163.com) ; Pan, Xu(xpan@rntek.cas.cn)
AbstractPerovskite 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.
Keywordperovskite solar cells super-halogen BH4- vacancy substitution methylammonium immobilization stability
DOI10.1021/acsami.9b21074
WOS KeywordHALIDE PEROVSKITES ; HIGHLY EFFICIENT ; DEGRADATION ; PASSIVATION ; TOLERANCE ; CHEMISTRY ; BEHAVIOR ; IMPACT ; LAYER
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFE0133800] ; National Natural Science Foundation of China[51971002]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000515214300042
PublisherAMER CHEMICAL SOC
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Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/103956
Collection中国科学院合肥物质科学研究院
Corresponding AuthorLi, Yongtao; Pan, Xu
Affiliation1.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
Recommended Citation
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).
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