Self-defect-passivation by Br-enrichment in FA-doped Cs(1-x)FA(x)PbBr(3) quantum dots: towards high-performance quantum dot light-emitting diodes
DC Field | Value | Language |
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dc.contributor.author | Park, Young Ran | - |
dc.contributor.author | Eom, Sangwon | - |
dc.contributor.author | Kim, Hong Hee | - |
dc.contributor.author | Choi, Won Kook | - |
dc.contributor.author | Kang, Youngjong | - |
dc.date.accessioned | 2022-07-07T15:47:06Z | - |
dc.date.available | 2022-07-07T15:47:06Z | - |
dc.date.created | 2021-05-11 | - |
dc.date.issued | 2020-09 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/145225 | - |
dc.description.abstract | Halide vacancy defect is one of the major origins of non-radiative recombination in the lead halide perovskite light emitting devices (LEDs). Hence the defect passivation is highly demanded for the high-performance perovskite LEDs. Here, we demonstrated that FA doping led to the enrichment of Br in Cs(1-x)FA(x)PbBr(3) QDs. Due to the defect passivation by the enriched Br, the trap density in Cs(1-x)FA(x)PbBr(3) significantly decreased after FA doping, and which improved the optical properties of Cs(1-x)FA(x)PbBr(3) QDs and their QD-LEDs. PLQY of Cs(1-x)FA(x)PbBr(3) QDs increased from 76.8% (x = 0) to 85.1% (x = 0.04), and L-max and CEmax of Cs(1-x)FA(x)PbBr(3) QD-LEDs were improved from L-max = 2880 cd m(-2) and CEmax = 1.98 cd A(-1) (x = 0) to L-max = 5200 cd m(-2) and CEmax = 3.87 cd A(-1) (x = 0.04). Cs(1-x)FA(x)PbBr(3) QD-LED device structure was optimized by using PVK as a HTL and ZnO modified with b-PEI as an ETL. The energy band diagram of Cs(1-x)FA(x)PbBr(3) QD-LEDs deduced by UPS analyses. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | NATURE RESEARCH | - |
dc.title | Self-defect-passivation by Br-enrichment in FA-doped Cs(1-x)FA(x)PbBr(3) quantum dots: towards high-performance quantum dot light-emitting diodes | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Youngjong | - |
dc.identifier.doi | 10.1038/s41598-020-71666-8 | - |
dc.identifier.scopusid | 2-s2.0-85090381960 | - |
dc.identifier.wosid | 000573254300008 | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.10, no.1, pp.1 - 10 | - |
dc.relation.isPartOf | SCIENTIFIC REPORTS | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 10 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 10 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | HALIDE PEROVSKITES | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | LUMINESCENT | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | CSPBX3 | - |
dc.subject.keywordPlus | CL | - |
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