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Title:
Additive-Modulated Evolution of HC(NH2)(2)PbI3 Black Polymorph for Mesoscopic Perovskite Solar Cells
Author: Wang, Zaiwei1; Zhou, Yuanyuan2; Pang, Shuping1; Xiao, Zewen3; Zhang, Jiliang4; Chai, Wenqiang1; Xu, Hongxia1; Liu, Zhihong1; Padture, Nitin P.2; Cui GuangLei(崔光磊)1
Source: CHEMISTRY OF MATERIALS
Issued Date: 2015-10-27
Volume: 27, Issue:20, Pages:7149-7155
DOI: 10.1021/acs.chemmater.5b03169
DOC Type: Article
English Abstract: Formamidinium lead triiodide (HC(NH2)(2)PbI3 or FAPbI(3)) is gaining increasing interest in the field of mesoscopic perovskite solar cells (PSCs) for its broader light absorption compared with the more widely studied CH3NH3PbI3 (MAPbI(3)). Because FAPbI(3) has two polymorphs ("black" alpha-FAPbI(3) and "yellow" delta-FAPbI(3)) at ambient temperature, where alpha-FAPbI(3) is the desirable photoactive perovskite phase, it becomes particularly important to suppress the formation of the nonperovskite delta-FAPbI(3) for achieving high efficiency in FAPbI(3)-based mesoscopic PSCs. In this study, we demonstrate that the judicious use of low-volatility additives in the precursor solution assists in the evolution of alpha-FAPbI(3) through the formation of non-delta-FAPbI(3) intermediate phases, which then convert to alpha-FAPbI(3) during thermal annealing. The underlying mechanism involved in the additive-modulated evolution of alpha-FAPI(3) upon mesoporous TiO2 substrates is elucidated, which suggests guidelines for developing protocols for the fabrication efficient FAPbI(3)-based mesoscopic PSCs.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Chemistry, Physical ; Materials Science, Multidisciplinary
WOS Subject Extended: Chemistry ; Materials Science
WOS Keyword Plus: FORMAMIDINIUM LEAD TRIHALIDE ; HOLE-CONDUCTOR-FREE ; THIN-FILMS ; HALIDE PEROVSKITES ; ONE-STEP ; IODIDE ; LIGHT ; EFFICIENCY ; CRYSTALLIZATION ; GROWTH
Indexed Type: SCI
Funder: Chinese National Natural Science Foundation(51202266 ; International S&T Cooperation Program of China(2015DFG62670) ; Youth Innovation Promotion Association of CAS(2015167) ; Basic Research Program of Qingdao(14-2-4-8-jch) ; Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology ; U.S. National Science Foundation(DMR 1305913 ; 21202178) ; OIA-1538893)
Language: 英语
WOS ID: WOS:000363915000028
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/6773
Appears in Collections:仿生能源与储能系统团队_期刊论文

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description.institution: 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
2.Brown Univ, Sch Engn, Providence, RI 02912 USA
3.Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan
4.City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

Recommended Citation:
Wang, Zaiwei,Zhou, Yuanyuan,Pang, Shuping,et al. Additive-Modulated Evolution of HC(NH2)(2)PbI3 Black Polymorph for Mesoscopic Perovskite Solar Cells[J]. CHEMISTRY OF MATERIALS,2015,27(20):7149-7155.
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