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Unravelling additive-based nanocrystal pinning for high efficiency organic-inorganic halide perovskite light-emitting diodes
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Min-Ho | - |
dc.contributor.author | Jeong, Su-Hun | - |
dc.contributor.author | Seo, Hong-Kyu | - |
dc.contributor.author | Wolf, Christoph | - |
dc.contributor.author | Kim, Young-Hoon | - |
dc.contributor.author | Kim, Hobeom | - |
dc.contributor.author | Byun, Jinwoo | - |
dc.contributor.author | Kim, Joo Sung | - |
dc.contributor.author | Cho, Himchan | - |
dc.contributor.author | Lee, Tae-Woo | - |
dc.date.accessioned | 2020-03-12T01:58:05Z | - |
dc.date.available | 2020-03-12T01:58:05Z | - |
dc.date.created | 2018-07-16 | - |
dc.date.issued | 2017-12 | - |
dc.identifier.citation | Nano Energy, Vol.42, pp.157-165 | - |
dc.identifier.issn | 2211-2855 | - |
dc.identifier.other | 40471 | - |
dc.identifier.uri | https://hdl.handle.net/10371/164467 | - |
dc.description.abstract | Organic-inorganic halide perovskite light emitting diode (PeLED) as a narrow band emitter is an emerging research field. To overcome limited electroluminescence efficiency of PeLEDs, trap-assisted non-radiative recombination in polycrystalline perovskite films should be reduced and the electron-hole balance in the PeLEDs must be improved. In this work, we investigated a practical way to effectively overcome above-mentioned issues by unravelling additive-based nanocrystal pinning (A-NCP) process using the carefully controlled electron transporting organic material solutions diluted in a volatile non-polar solvent. We found that without affecting the intrinsic crystal structure, A-NCP improved the radiative recombination rate by reducing effective defect density at grain boundaries due to the defect healing effect. Moreover, it induced the improved electron-hole balance in the dominantly p-type CH3NH3PbBr3 based PeLEDs, leading to the highest efficiency of 8.79% ever reported to date among organic-inorganic halide perovskite-based green PeLEDs. Therefore, our work gives the effective approaches for efficient PeLEDs from the investigations of the role of A-NCP incorporating a tiny amount of an electron transporting molecule as an additive to increase radiative recombination rate of polycrystalline perovskite films. | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Unravelling additive-based nanocrystal pinning for high efficiency organic-inorganic halide perovskite light-emitting diodes | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 이태우 | - |
dc.identifier.doi | 10.1016/j.nanoen.2017.10.012 | - |
dc.citation.journaltitle | Nano Energy | - |
dc.identifier.wosid | 000418344200019 | - |
dc.identifier.scopusid | 2-s2.0-85032890167 | - |
dc.citation.endpage | 165 | - |
dc.citation.startpage | 157 | - |
dc.citation.volume | 42 | - |
dc.identifier.sci | 000418344200019 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Lee, Tae-Woo | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | HYBRID PEROVSKITE | - |
dc.subject.keywordPlus | SINGLE-CRYSTALS | - |
dc.subject.keywordPlus | ELECTRON | - |
dc.subject.keywordPlus | DIFFUSION | - |
dc.subject.keywordPlus | LENGTHS | - |
dc.subject.keywordPlus | ELECTROLUMINESCENCE | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | SEMICONDUCTORS | - |
dc.subject.keywordPlus | CH3NH3PBI3 | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordAuthor | Organic-inorganic halide perovskite | - |
dc.subject.keywordAuthor | Perovskite light emitting diodes | - |
dc.subject.keywordAuthor | Polycrystalline perovskite film | - |
dc.subject.keywordAuthor | Additive | - |
dc.subject.keywordAuthor | Electron injection efficiency | - |
dc.subject.keywordAuthor | Defect healing effect | - |
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