首页|Formadinium Cation Doping Stabilized Ultra-deep-blue Lead Halide Perovskite Nanocrystal Light-emitting Diodes

Formadinium Cation Doping Stabilized Ultra-deep-blue Lead Halide Perovskite Nanocrystal Light-emitting Diodes

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The halide migration effect in mixed-halide lead-based perovskite is a serious problem hindering the development of its display technology.In this study,we have successfully addressed this issue by reporting formadinium(FA)doped mixed-halide perovskite nanocrystals(NCs)with ultra-deep-blue emission of 450 nm,narrow bandwidth of 16 nm,and a high photoluminescence quantum yield(PLQY)of 66％.The perovskite nanocrystal light-emitting diodes(NC-LEDs)using this nanocrystal as an active layer achieved a maximum external quantum efficiency(EQE)of 0.32％,30-fold improved compared to that of pristine and stable electroluminescence(EL)spectra at 450 nm under a 4.9-8.0 V bias.These findings demonstrate the potential of our approach in developing stable and efficient deep blue perovskite NC-LEDs.

Halide perovskiteLight-emitting diodeDeep-blue

Pui Kei KO、Jonathan E.HALPERT

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Department of Chemistry,The Hong Kong University of Science and Technology,Kowloon,Hong Kong 999077,P.R.China

Funding from the School of Science and Department of Chemistry at the Hong Kong University of Science and Technology(HKUST),Research Grants Council/University Grants Committee(RGC/UGC)ITF-midstream Grant from the Innovation and Technology Commission(ITC)

IRS22SC11716306020ITS/059/22MX

2024

10.1007/s40242-024-4065-x

高等学校化学研究(英文版)
吉林大学

高等学校化学研究(英文版)

CSTPCD
影响因子：0.871
ISSN：1005-9040
年,卷(期)：2024.40(3)
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