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Valley-centre tandem perovskite light-emitting diodes
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Hyeon-Dong | - |
dc.contributor.author | Woo, Seung-Je | - |
dc.contributor.author | Kim, Sungjin | - |
dc.contributor.author | Kim, Junho | - |
dc.contributor.author | Zhou, Huanyu | - |
dc.contributor.author | Han, Shin Jung | - |
dc.contributor.author | Jang, Kyung Yeon | - |
dc.contributor.author | Kim, Dong-Hyeok | - |
dc.contributor.author | Park, Jinwoo | - |
dc.contributor.author | Yoo, Seunghyup | - |
dc.contributor.author | Lee, Tae-Woo | - |
dc.date.accessioned | 2024-02-22T01:35:02Z | - |
dc.date.available | 2024-02-22T01:35:02Z | - |
dc.date.created | 2024-02-21 | - |
dc.date.issued | ACCEPT | - |
dc.identifier.citation | Nature Nanotechnology | - |
dc.identifier.issn | 1748-3387 | - |
dc.identifier.uri | https://hdl.handle.net/10371/199008 | - |
dc.description.abstract | Perovskite light-emitting diodes (PeLEDs) have emerged as a promising new light source for displays. The development roadmap for commercializing PeLEDs should include a tandem device structure, specifically by stacking a thin nanocrystal PeLED unit and an organic light-emitting diode unit, which can achieve a vivid and efficient tandem display; however, simply combining light-emitting diodes with different characteristics does not guarantee both narrowband emission and high efficiency, as it may cause a broadened electroluminescence spectra and a charge imbalance. Here, by conducting optical simulations of the hybrid tandem (h-tandem) PeLED, we have discovered a crucial optical microcavity structure known as the h-tandem valley, which enables the h-tandem PeLED to emit light with a narrow bandwidth. Specifically, the centre structure of the h-tandem valley (we call it valley-centre tandem) demonstrates near-perfect charge balance and optimal microcavity effects. As a result, the h-tandem PeLED achieves a high external quantum efficiency of 37.0% and high colour purity with a narrow full-width at half-maximum of 27.3 nm (versus 64.5 nm in organic light-emitting diodes) along with a fast on-off response. These findings offer a new strategy to overcome the limitations of nanocrystal-based PeLEDs, providing valuable optical and electrical guidelines for integrating different types of light-emitting device into practical display applications. A hybrid valley-centre tandem optical structure that combines perovskites and organic light-emitting diodes is demonstrated to obtain an efficient emitting device, showing the commercial potential of perovskite displays. | - |
dc.language | 영어 | - |
dc.publisher | Nature Publishing Group | - |
dc.title | Valley-centre tandem perovskite light-emitting diodes | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41565-023-01581-2 | - |
dc.citation.journaltitle | Nature Nanotechnology | - |
dc.identifier.wosid | 001152775200001 | - |
dc.identifier.scopusid | 2-s2.0-85182485953 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Lee, Tae-Woo | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | IMPROVE | - |
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