Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.number | 25 | - |
dc.citation.startPage | 6689 | - |
dc.citation.title | ENERGIES | - |
dc.citation.volume | 13 | - |
dc.contributor.author | Park, Jong Hyun | - |
dc.contributor.author | Jang, Chung Hyeon | - |
dc.contributor.author | Jung, Eie Dae | - |
dc.contributor.author | Lee, Seungjin | - |
dc.contributor.author | Song, Myoung Hoon | - |
dc.contributor.author | Lee, Bo Ram | - |
dc.date.accessioned | 2023-12-21T16:39:04Z | - |
dc.date.available | 2023-12-21T16:39:04Z | - |
dc.date.created | 2020-12-18 | - |
dc.date.issued | 2020-12 | - |
dc.description.abstract | Metal halide perovskites have been investigated for the next-generation light-emitting materials because of their advantages such as high photoluminescence quantum yield (PLQY), excellent color purity, and facile color tunability. Recently, red- and green-emissive perovskite light-emitting diodes (PeLEDs) have shown an external quantum efficiency (EQE) of over 20%, whereas there is still room for improvement for blue emissive PeLEDs. By controlling the halide compositions of chloride (Cl-) and bromide (Br-), the bandgap of perovskites can be easily tuned for blue emission. However, halide segregation easily occurrs in the mixed-halide perovskite under light irradiation and LED operation because of poor phase stability. Here, we explore the effect of A-site cation engineering on the phase stability of the mixed-halide perovskites and find that a judicious selection of low dipole moment A cation (formamidinium or cesium) suppresses the halide segregation. This enables efficient bandgap tuning and electroluminescence stability for sky blue emissive PeLEDs over the current density of 15 mA/cm(2). | - |
dc.identifier.bibliographicCitation | ENERGIES, v.13, no.25, pp.6689 | - |
dc.identifier.doi | 10.3390/en13246689 | - |
dc.identifier.issn | 1996-1073 | - |
dc.identifier.scopusid | 2-s2.0-85106571544 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/49003 | - |
dc.identifier.url | https://www.mdpi.com/1996-1073/13/24/6689 | - |
dc.identifier.wosid | 000602888000001 | - |
dc.language | 영어 | - |
dc.publisher | MDPI | - |
dc.title | A-Site Cation Engineering for Efficient Blue-Emissive Perovskite Light-Emitting Diodes | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | perovskite light-emitting diodes | - |
dc.subject.keywordAuthor | blue emission | - |
dc.subject.keywordAuthor | device stability | - |
dc.subject.keywordAuthor | A-site cation | - |
dc.subject.keywordAuthor | halide segregation | - |
dc.subject.keywordPlus | PERFORMANCE | - |
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