{"database":"biostudies-literature","file_versions":[],"scores":{"citationCount":0,"reanalysisCount":0,"viewCount":49,"searchCount":0},"additional":{"omics_type":["Unknown"],"volume":["12(1)"],"submitter":["Wang X"],"pubmed_abstract":["Previous reports of formamidinium/methylamine (FAMA)-mixed halide perovskite solar cells have focused mainly on controlling the morphology of the perovskite film and its interface-for example, through the inclusion of bromine and surface passivation. In this paper, we describe a new processing pathway for the growth of a high-quality bromine-free FAMAPbI<sub>3</sub> halide perovskites via the control of intermediate phase. Through low-temperature aging growth (LTAG) of a freshly deposited perovskite film, α-phase perovskites can be seeded in the intermediate phase and, at the same time, prevent beta-phase perovskite to nucleate. After postannealing, large grain-size perovskites with significantly reduced PbI<sub>2</sub> presence on the surface can be obtained, thereby eliminating the need of additional surface passivation step. Our pristine LTAG-treated solar cells could provide PCEs of greater than 22% without elaborate use of bromine or an additional passivation layer. More importantly, when using this LTAG process, the growth of the pure alpha-phase FAMAPbI<sub>3</sub> was highly reproducible."],"journal":["Nano-micro letters"],"pagination":["84"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC7770720"],"repository":["biostudies-literature"],"pubmed_title":["Low-Temperature Aging Provides 22% Efficient Bromine-Free and Passivation Layer-Free Planar Perovskite Solar Cells."],"pmcid":["PMC7770720"],"pubmed_authors":["Lu ZH","Leng S","Deng LL","Chen CC","Zhong H","Wang X","Bao Q","Wang L","Shan T"],"view_count":["49"],"additional_accession":[]},"is_claimable":false,"name":"Low-Temperature Aging Provides 22% Efficient Bromine-Free and Passivation Layer-Free Planar Perovskite Solar Cells.","description":"Previous reports of formamidinium/methylamine (FAMA)-mixed halide perovskite solar cells have focused mainly on controlling the morphology of the perovskite film and its interface-for example, through the inclusion of bromine and surface passivation. In this paper, we describe a new processing pathway for the growth of a high-quality bromine-free FAMAPbI<sub>3</sub> halide perovskites via the control of intermediate phase. Through low-temperature aging growth (LTAG) of a freshly deposited perovskite film, α-phase perovskites can be seeded in the intermediate phase and, at the same time, prevent beta-phase perovskite to nucleate. After postannealing, large grain-size perovskites with significantly reduced PbI<sub>2</sub> presence on the surface can be obtained, thereby eliminating the need of additional surface passivation step. Our pristine LTAG-treated solar cells could provide PCEs of greater than 22% without elaborate use of bromine or an additional passivation layer. More importantly, when using this LTAG process, the growth of the pure alpha-phase FAMAPbI<sub>3</sub> was highly reproducible.","dates":{"release":"2020-01-01T00:00:00Z","publication":"2020 Apr","modification":"2024-11-15T10:55:28.492Z","creation":"2022-02-10T15:48:12.016Z"},"accession":"S-EPMC7770720","cross_references":{"pubmed":["34138089"],"doi":["10.1007/s40820-020-00418-0"]}}