Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells
The formation of a dense and uniform thin layer on the substrates is crucial for the fabrication of high-performance perovskite solar cells (PSCs) containing formamidinium with multiple cations and mixed halide anions. The concentration of defect states, which reduce a cell’s performance by decreasi...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2017-06, Vol.356 (6345), p.1376-1379 |
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| creator | Yang, Woon Seok Park, Byung-Wook Jung, Eui Hyuk Jeon, Nam Joong Kim, Young Chan Lee, Dong Uk Shin, Seong Sik Seo, Jangwon Kim, Eun Kyu Noh, Jun Hong Seok, Sang Il |
| description | The formation of a dense and uniform thin layer on the substrates is crucial for the fabrication of high-performance perovskite solar cells (PSCs) containing formamidinium with multiple cations and mixed halide anions. The concentration of defect states, which reduce a cell’s performance by decreasing the open-circuit voltage and short-circuit current density, needs to be as low as possible. We show that the introduction of additional iodide ions into the organic cation solution, which are used to form the perovskite layers through an intramolecular exchanging process, decreases the concentration of deep-level defects. The defect-engineered thin perovskite layers enable the fabrication of PSCs with a certified power conversion efficiency of 22.1% in small cells and 19.7% in 1-square-centimeter cells. |
| doi_str_mv | 10.1126/science.aan2301 |
| format | Article |
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The concentration of defect states, which reduce a cell’s performance by decreasing the open-circuit voltage and short-circuit current density, needs to be as low as possible. We show that the introduction of additional iodide ions into the organic cation solution, which are used to form the perovskite layers through an intramolecular exchanging process, decreases the concentration of deep-level defects. The defect-engineered thin perovskite layers enable the fabrication of PSCs with a certified power conversion efficiency of 22.1% in small cells and 19.7% in 1-square-centimeter cells.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.aan2301</identifier><identifier>PMID: 28663498</identifier><language>eng</language><publisher>United States: American Association for the Advancement of Science</publisher><subject>Anions ; Cations ; Current carriers ; Current density ; Defects ; Energy conversion efficiency ; Fabrication ; Formations ; Iodides ; Lead ; Manufacturing ; Open circuit voltage ; Perovskites ; Photovoltaic cells ; Recombination ; Short circuits ; Short-circuit current ; Solar cells ; Substrates ; Thin films</subject><ispartof>Science (American Association for the Advancement of Science), 2017-06, Vol.356 (6345), p.1376-1379</ispartof><rights>Copyright © 2017 by the American Association for the Advancement of Science</rights><rights>Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. 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The concentration of defect states, which reduce a cell’s performance by decreasing the open-circuit voltage and short-circuit current density, needs to be as low as possible. We show that the introduction of additional iodide ions into the organic cation solution, which are used to form the perovskite layers through an intramolecular exchanging process, decreases the concentration of deep-level defects. 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management in formamidinium-lead-halide–based perovskite layers for efficient solar cells</title><author>Yang, Woon Seok ; Park, Byung-Wook ; Jung, Eui Hyuk ; Jeon, Nam Joong ; Kim, Young Chan ; Lee, Dong Uk ; Shin, Seong Sik ; Seo, Jangwon ; Kim, Eun Kyu ; Noh, Jun Hong ; Seok, Sang Il</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c524t-6faade9f4bcfbe883d075c13d4e40bce053eb0b07582641a474a74a91dc87f143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Anions</topic><topic>Cations</topic><topic>Current carriers</topic><topic>Current density</topic><topic>Defects</topic><topic>Energy conversion efficiency</topic><topic>Fabrication</topic><topic>Formations</topic><topic>Iodides</topic><topic>Lead</topic><topic>Manufacturing</topic><topic>Open circuit voltage</topic><topic>Perovskites</topic><topic>Photovoltaic cells</topic><topic>Recombination</topic><topic>Short 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| source | Jstor Complete Legacy; Science Magazine |
| subjects | Anions Cations Current carriers Current density Defects Energy conversion efficiency Fabrication Formations Iodides Lead Manufacturing Open circuit voltage Perovskites Photovoltaic cells Recombination Short circuits Short-circuit current Solar cells Substrates Thin films |
| title | Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells |
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