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DC Field | Value | Language |
---|---|---|
dc.citation.number | 14 | - |
dc.citation.startPage | 1702898 | - |
dc.citation.title | ADVANCED ENERGY MATERIALS | - |
dc.citation.volume | 8 | - |
dc.contributor.author | Myung, Chang Woo | - |
dc.contributor.author | Yun, Jeonghun | - |
dc.contributor.author | Lee, Geunsik | - |
dc.contributor.author | Kim, Kwang S. | - |
dc.date.accessioned | 2023-12-21T20:47:08Z | - |
dc.date.available | 2023-12-21T20:47:08Z | - |
dc.date.created | 2018-01-24 | - |
dc.date.issued | 2018-05 | - |
dc.description.abstract | As the race toward higher efficiency for inorganic/organic hybrid perovskite solar cells (PSCs) is becoming highly competitive, a design scheme to maximize carrier transport toward higher power efficiency has been urgently demanded. In this study, a hidden role of A-site cations of PSCs in carrier transport, which has been largely neglected is unraveled, i.e., tuning the Frohlich electron-phonon (e-ph) coupling of longitudinal optical (LO) phonon by A-site cations. The key for steering Frohlich polaron is to control the interaction strength and the number of proton (or lithium) coordination to halide ions. The coordination to I- alleviates electron-phonon scattering by either decreasing the Born effective charge or absorbing the LO motion of I. This novel principle discloses low electron-phonon coupling in several promising organic cations including hydroxyl-ammonium cation (NH3OH+), hydrazinium cation (NH3NH2+) and possibly Li+ solvating methylamine (Li+center dot center dot center dot NH2CH3), on a par with methyl-ammonium cations. A new perspective on the role of A-site cations could help in improving power efficiency and accelerating the application of PSCs. | - |
dc.identifier.bibliographicCitation | ADVANCED ENERGY MATERIALS, v.8, no.14, pp.1702898 | - |
dc.identifier.doi | 10.1002/aenm.201702898 | - |
dc.identifier.issn | 1614-6832 | - |
dc.identifier.scopusid | 2-s2.0-85040788786 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/24145 | - |
dc.identifier.url | http://onlinelibrary.wiley.com/doi/10.1002/aenm.201702898/abstract | - |
dc.identifier.wosid | 000435713600011 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | A New Perspective on the Role of A‐Site Cations in Perovskite Solar Cells | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science; Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | A-site cations | - |
dc.subject.keywordAuthor | charge carrier transport | - |
dc.subject.keywordAuthor | electron-phonon interactions | - |
dc.subject.keywordAuthor | Frohlich (large) polarons | - |
dc.subject.keywordAuthor | lead halide perovskite solar cells | - |
dc.subject.keywordPlus | METHYLAMMONIUM LEAD IODIDE | - |
dc.subject.keywordPlus | CARRIER DYNAMICS | - |
dc.subject.keywordPlus | ORGANIC CATIONS | - |
dc.subject.keywordPlus | HYDROXYLAMMONIUM | - |
dc.subject.keywordPlus | CH3NH3PBI3-XCLX | - |
dc.subject.keywordPlus | STABILIZATION | - |
dc.subject.keywordPlus | METHYLAMINE | - |
dc.subject.keywordPlus | MOBILITIES | - |
dc.subject.keywordPlus | CRYSTALS | - |
dc.subject.keywordPlus | HALIDES | - |
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