CAS OpenIR
Below 200 degrees C Fabrication Strategy of Black-Phase CsPbI3 Film for Ambient-Air-Stable Solar Cells
Ye, Tao1; Zhou, Bo2; Zhan, Fei2; Yuan, Fangli3; Ramakrishna, Seeram4,5; Golberg, Dmitri6; Wang, Xi1
2020-01-30
Source PublicationSOLAR RRL
ISSN2367-198X
Pages9
Abstract

Cesium-based fully inorganic black-phase (BP) lead halide perovskites (such as alpha-, beta-, and gamma-CsPbI3) with excellent thermal stability and a decently high photovoltaic performance have attracted increasing attention. However, a below 200 degrees C fabrication process of the desirable BP CsPbI3 has rarely been reported. Herein, the detailed crystal structure evolution of ambient-air-stable BP CsPbI3 prepared under low temperature conditions is investigated by exploiting the strong coordination bonding between C(sic)O in polyvinylpyrrolidone (PVP) and Pb in CsPbI3 and inflection effect of PVP under annealing. It is found that ambient-air-stable BP CsPbI3 films are formed and the energy barrier for the long-term stable BP CsPbI3 formation is significantly reduced (the required annealing temperature is only 80 degrees C). After optimization, the highest power conversion efficiencies (PCEs) of approximate to 4.0% and 10.0% are recorded for the 3% PVP-added devices with light absorbers annealed at 80 and 160 degrees C, respectively. More importantly, the 3% PVP device annealed at 160 degrees C maintains approximate to 80% of its original PCE after 5 months storage under ambient-air conditions.

KeywordAmbient Air Stable Coordination Bonding Cspbi3 In Situ Methods Perovskite Solar Cells
DOI10.1002/solr.202000014
Language英语
WOS KeywordGrain Refining Mechanism ; Cesium Lead Iodide ; Perovskite Nanocrystals ; Device Performance ; Halide Perovskites ; High-efficiency ; Crystal-growth ; Stability ; Pvp ; Nanoparticles
Funding ProjectFundamental Research Funds for the Central Universities[2018JBZ107] ; National Natural Science Foundation of China[91961125]
WOS Research AreaEnergy & Fuels ; Materials Science
WOS SubjectEnergy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationFundamental Research Funds for the Central Universities ; National Natural Science Foundation of China
WOS IDWOS:000510118900001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38734
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Xi
Affiliation1.Beijing Jiaotong Univ, Sch Sci, Dept Phys, Key Lab Luminescence & Opt Informat,Minist Educ, Beijing 100044, Peoples R China
2.Chem & Chem Engn Guangdong Lab, Shantou 515031, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
4.Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
5.Natl Univ Singapore, Ctr Nanofibers & Nanotechnol NUSCNN, Singapore 117576, Singapore
6.QUT, Sci & Engn Fac, 2 George St, Brisbane, Qld 4000, Australia
Recommended Citation
GB/T 7714
Ye, Tao,Zhou, Bo,Zhan, Fei,et al. Below 200 degrees C Fabrication Strategy of Black-Phase CsPbI3 Film for Ambient-Air-Stable Solar Cells[J]. SOLAR RRL,2020:9.
APA Ye, Tao.,Zhou, Bo.,Zhan, Fei.,Yuan, Fangli.,Ramakrishna, Seeram.,...&Wang, Xi.(2020).Below 200 degrees C Fabrication Strategy of Black-Phase CsPbI3 Film for Ambient-Air-Stable Solar Cells.SOLAR RRL,9.
MLA Ye, Tao,et al."Below 200 degrees C Fabrication Strategy of Black-Phase CsPbI3 Film for Ambient-Air-Stable Solar Cells".SOLAR RRL (2020):9.
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