Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 강영종 | - |
dc.date.accessioned | 2022-10-12T01:45:34Z | - |
dc.date.available | 2022-10-12T01:45:34Z | - |
dc.date.issued | 2021-01 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY C, v. 9, NO 10, Page. 3608-3619 | en_US |
dc.identifier.issn | 2050-7526 ; 2050-7534 | en_US |
dc.identifier.uri | https://pubs.rsc.org/en/content/articlelanding/2021/TC/D0TC05514J | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/175234 | - |
dc.description.abstract | Efficiency roll-off is a significant issue in blue light-emitting diodes (LEDs), but its origin still remains controversial. We report CsPbBr3−xClx/PbBry (or PbCly) (core/shell) quantum dot LEDs exhibiting the emission peak spanning from λpeak = 492 to λpeak = 435 nm by varying the Cl composition (0 ≤ x ≤ 2.21). PLQY and EQE significantly decreased with the increase of the Cl composition. Careful analyses of the composition and the energy structure using EL, PL, TRPL, UPS, XPS and STEM-EDX measurements reveal that the luminance efficiency roll-off in CsPbBr3−xClx LEDs is attributed to the following three combined effects: (1) luminescence quenching by the non-radiative trap-assisted recombination, (2) the hole transfer process at the CsPbBr3−xClx/PbBry core/shell, and (3) imbalanced charge injection caused by a high energy barrier for the hole conduction at the PVK/QD heterointerface (Δh′). | en_US |
dc.description.sponsorship | This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea Government (MSIT) (No. 2019R1A2C1005265 and 2020R1A2C2100802). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ROYAL SOC CHEMISTRY | en_US |
dc.title | Luminance efficiency roll-off mechanism in CsPbBr3-xClx mixed-halide perovskite quantum dot blue light-emitting diodes | en_US |
dc.type | Article | en_US |
dc.relation.no | 10 | - |
dc.relation.volume | 9 | - |
dc.identifier.doi | 10.1039/d0tc05514j | en_US |
dc.relation.page | 3608-3619 | - |
dc.relation.journal | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.contributor.googleauthor | Park, Young Ran | - |
dc.contributor.googleauthor | Kim, Hong Hee | - |
dc.contributor.googleauthor | Eom, Sangwon | - |
dc.contributor.googleauthor | Choi, Won Kook | - |
dc.contributor.googleauthor | Choi, Hyosung | - |
dc.contributor.googleauthor | Lee, Bo Ram | - |
dc.contributor.googleauthor | Kang, Youngjong | - |
dc.relation.code | 2021001864 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | youngjkang | - |
dc.identifier.orcid | https://orcid.org/0000-0001-5298-9189 | - |
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