Title | Br Vacancy Defects Healed Perovskite Indoor Photovoltaic Modules with Certified Power Conversion Efficiency Exceeding 36% |
Author | |
Corresponding Author | Wu, Shaohang; Mai, Yaohua |
Publication Years | 2022-10-01
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DOI | |
Source Title | |
EISSN | 2198-3844
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Abstract | Indoor photovoltaics (IPVs) are expected to power the Internet of Things ecosystem, which is attracting ever-increasing attention as part of the rapidly developing distributed communications and electronics technology. The power conversion efficiency of IPVs strongly depends on the match between typical indoor light spectra and the band gap of the light absorbing layer. Therefore, band-gap tunable materials, such as metal-halide perovskites, are specifically promising candidates for approaching the indoor illumination efficiency limit of similar to 56%. However, perovskite materials with ideal band gap for indoor application generally contain high bromine (Br) contents, causing inferior open-circuit voltage (V-OC). By fabricating a series of wide-bandgap perovskites (Cs(0.17)FA(0.83)PbI(3-)(x)Br(x), 0.6 <= x <= 1.6) with varying Br contents and related band gaps, it is found that, the high Br vacancy (V-Br) defect density is a significant reason that leading to large V-OC deficits apart from the well-accepted halide segregation. The introduction of I-rich alkali metal small-molecule compounds is demonstrated to suppress the V-Br and increase the V-OC of perovskite IPVs up to 1.05 V under 1000 lux light-emitting diode illumination, one of the highest V-OC values reported so far. More importantly, the modules are sent for independent certification and have gained a record efficiency of 36.36%. |
Keywords | |
URL | [Source Record] |
Indexed By | |
Language | English
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SUSTech Authorship | Others
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Funding Project | National Natural Science Foundation of China[
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WOS Research Area | Chemistry
; Science & Technology - Other Topics
; Materials Science
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WOS Subject | Chemistry, Multidisciplinary
; Nanoscience & Nanotechnology
; Materials Science, Multidisciplinary
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WOS Accession No | WOS:000868849200001
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Publisher | |
Data Source | Web of Science
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Citation statistics |
Cited Times [WOS]:0
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Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/406507 |
Department | Department of Materials Science and Engineering |
Affiliation | 1.Jinan Univ, Inst New Energy Technol, Coll Informat Sci & Technol, Guangdong Engn Res Ctr Thin Film Photovolta Proc, Guangzhou 510632, Peoples R China 2.Jinan Univ, Key Lab New Semicond & Devices, Guangdong Higher Educ Inst, Guangzhou 510632, Peoples R China 3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China 4.South China Normal Univ, South China Acad Adv Optoelect, Inst Adv Mat, Guangzhou 510006, Peoples R China 5.South China Normal Univ, South China Acad Adv Optoelect, Guangdong Prov Key Lab Opt Informat Mat & Technol, Guangzhou 510006, Peoples R China |
Recommended Citation GB/T 7714 |
Zhang, Cuiling,Liu, Chong,Gao, Yanyan,et al. Br Vacancy Defects Healed Perovskite Indoor Photovoltaic Modules with Certified Power Conversion Efficiency Exceeding 36%[J]. ADVANCED SCIENCE,2022.
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APA |
Zhang, Cuiling.,Liu, Chong.,Gao, Yanyan.,Zhu, Shusheng.,Chen, Fang.,...&Mai, Yaohua.(2022).Br Vacancy Defects Healed Perovskite Indoor Photovoltaic Modules with Certified Power Conversion Efficiency Exceeding 36%.ADVANCED SCIENCE.
|
MLA |
Zhang, Cuiling,et al."Br Vacancy Defects Healed Perovskite Indoor Photovoltaic Modules with Certified Power Conversion Efficiency Exceeding 36%".ADVANCED SCIENCE (2022).
|
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