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Seok, Sang Il
Laboratory for Energy Harvesting Materials and Systems (LEHMS)
Research Interests
  • Solar energy conversion, perovskite solar cells, inorganic-organic hybrid materials and processing, solution chemistry

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Stabilization of Precursor Solution and Perovskite Layer by Addition of Sulfur

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dc.contributor.author Min, Hanul ko
dc.contributor.author Kim, Gwisu ko
dc.contributor.author Paik, Min Jae ko
dc.contributor.author Lee, Seungwoon ko
dc.contributor.author Yang, Woon Seok ko
dc.contributor.author Ung, Minsu ko
dc.contributor.author Seok, Sang Il ko
dc.date.available 2019-07-10T09:21:46Z -
dc.date.created 2019-06-28 ko
dc.date.issued 2019-05 ko
dc.identifier.citation ADVANCED ENERGY MATERIALS, v.9, no.17, pp.1803476 ko
dc.identifier.issn 1614-6832 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/26876 -
dc.description.abstract Efficient perovskite solar cells (PSCs) are mainly fabricated by a solution coating processes. However, the efficiency of such devices varies significantly with the aging time of the precursor solution used to fabricate them, which includes a mixture of perovskite components, especially methylammonium (MA), and formamidinium (FA) cations. Herein, how the inorganic-organic hybrid perovskite precursor solution of (FAPbI(3))(0.95)(MAPbBr(3))(0.05) degrades over time and how such degradation can be effectively inhibited is reported on, and the associated mechanism of degradation is discussed. Such degradation of the precursor solution is closely related to the loss of MA cations dissolved in the FA solution through the deprotonation of MA to volatile methylamine (CH3NH2). Addition of elemental sulfur (S-8) drastically stabilizes the precursor solution owing to amine-sulfur coordination, without compromising the power conversion efficiency (PCE) of the derived PSCs. Furthermore, sulfur introduced to stabilize the precursor solution results in improved PSC stability. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Stabilization of Precursor Solution and Perovskite Layer by Addition of Sulfur ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85062557691 ko
dc.identifier.wosid 000471338400004 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/aenm.201803476 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/full/10.1002/aenm.201803476 ko
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