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Semi-empirical approach to assess externally-induced photoluminescence linewidth broadening of halide perovskite nanocrystals with particle-size distribution
DC Field | Value | Language |
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dc.contributor.author | Jang, Hyun Myung | - |
dc.contributor.author | Lee, Song Hee | - |
dc.contributor.author | Jang, Kyung Yeon | - |
dc.contributor.author | Park, Jinwoo | - |
dc.contributor.author | Lee, Tae-Woo | - |
dc.date.accessioned | 2024-01-15T08:43:50Z | - |
dc.date.available | 2024-01-15T08:43:50Z | - |
dc.date.created | 2024-01-08 | - |
dc.date.created | 2024-01-08 | - |
dc.date.created | 2024-01-08 | - |
dc.date.issued | 2023-12 | - |
dc.identifier.citation | Communications Physics, Vol.6 No.1, p. 372 | - |
dc.identifier.issn | 2399-3650 | - |
dc.identifier.uri | https://hdl.handle.net/10371/198908 | - |
dc.description.abstract | Colloidal nanocrystals (NCs) can be used to prepare high-color-purity metal halide perovskites (MHPs) for light-emitting displays. However, the NCs have a finite particle-size distribution, which broadens the linewidth of photoluminescence spectra under strong quantum confinement, and thereby degrades the color purity of the MHPs. This paper presents a simple method to quantify this externally-introduced broadening of linewidth Gamma(SD) by combining experimental size-distribution histogram with size-dependent photoluminescence-wavelength (Pl-lambda) curve. We develop a semi-empirical method to estimate the other three contributions to the experimentally-measured full-width at half-maximum, Gamma(EXP). Namely: the intrinsic linewidth Gamma(LO) caused by exciton-longitudinal optical (LO) phonon Frohlich coupling; the inhomogeneous linewidth Gamma(o) caused by imperfections-related scattering, and the broadening Gamma(QC) due to the quantum-confinement effect. We show that Gamma(LO) of a nanocrystal decreases together with the particle size, disappearing at 1.6 nm radius. Finally, we show that Gamma(LO) is correlated with the degree of Frohlich-polaron formation, hence proportional to the long-range LO-phonon-electron coupling. | - |
dc.language | 영어 | - |
dc.publisher | Nature Research | - |
dc.title | Semi-empirical approach to assess externally-induced photoluminescence linewidth broadening of halide perovskite nanocrystals with particle-size distribution | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s42005-023-01459-8 | - |
dc.citation.journaltitle | Communications Physics | - |
dc.identifier.wosid | 001128904400001 | - |
dc.identifier.scopusid | 2-s2.0-85180367845 | - |
dc.citation.number | 1 | - |
dc.citation.startpage | 372 | - |
dc.citation.volume | 6 | - |
dc.description.isOpenAccess | Y | - |
dc.contributor.affiliatedAuthor | Lee, Tae-Woo | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | OPTICAL PHONONS | - |
dc.subject.keywordPlus | EXCITON | - |
dc.subject.keywordPlus | STATES | - |
dc.subject.keywordPlus | CONFINEMENT | - |
dc.subject.keywordPlus | CSPBX3 | - |
dc.subject.keywordPlus | BR | - |
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