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Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission

Next-generation wide color gamut displays require the development of efficient and toxic-free light-emitting materials meeting the crucial Rec. 2020 standard. With the rapid progress of green and red perovskite light-emitting diodes (PeLEDs), blue PeLEDs remain a central challenge because of the und...

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Autores principales: Guo, Qingxun, Wang, Liang, Yang, Longbo, Duan, Jiashun, Du, Hainan, Ji, Guoqi, Liu, Nian, Zhao, Xue, Chen, Chao, Xu, Ling, Gao, Liang, Luo, Jiajun, Tang, Jiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9757739/
https://www.ncbi.nlm.nih.gov/pubmed/36525491
http://dx.doi.org/10.1126/sciadv.abq2148
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author Guo, Qingxun
Wang, Liang
Yang, Longbo
Duan, Jiashun
Du, Hainan
Ji, Guoqi
Liu, Nian
Zhao, Xue
Chen, Chao
Xu, Ling
Gao, Liang
Luo, Jiajun
Tang, Jiang
author_facet Guo, Qingxun
Wang, Liang
Yang, Longbo
Duan, Jiashun
Du, Hainan
Ji, Guoqi
Liu, Nian
Zhao, Xue
Chen, Chao
Xu, Ling
Gao, Liang
Luo, Jiajun
Tang, Jiang
author_sort Guo, Qingxun
collection PubMed
description Next-generation wide color gamut displays require the development of efficient and toxic-free light-emitting materials meeting the crucial Rec. 2020 standard. With the rapid progress of green and red perovskite light-emitting diodes (PeLEDs), blue PeLEDs remain a central challenge because of the undesirable color coordinates and poor spectra stability. Here, we report Cs(3)CeBr(x)I(6−x) (x = 0 to 6) with the cryolite-like structure and stable and tunable color coordinates from (0.17, 0.02) to (0.15, 0.04). Further encouraged by the short exciton lifetime (26.1 ns) and high photoluminescence quantum yield (~76%), we construct Cs(3)CeBr(x)I(6−x)-based rare-earth LEDs via thermal evaporation. A seed layer strategy is conducted to improve the device’s performance. The optimal Cs(3)CeI(6) device achieves a maximum external quantum efficiency of 3.5% and a luminance of 470 cd m(−2) with stable deep-blue color coordinates of (0.15, 0.04). Our work opens another avenue to achieving efficient and spectrally stable deep-blue LEDs.
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spelling pubmed-97577392022-12-27 Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission Guo, Qingxun Wang, Liang Yang, Longbo Duan, Jiashun Du, Hainan Ji, Guoqi Liu, Nian Zhao, Xue Chen, Chao Xu, Ling Gao, Liang Luo, Jiajun Tang, Jiang Sci Adv Physical and Materials Sciences Next-generation wide color gamut displays require the development of efficient and toxic-free light-emitting materials meeting the crucial Rec. 2020 standard. With the rapid progress of green and red perovskite light-emitting diodes (PeLEDs), blue PeLEDs remain a central challenge because of the undesirable color coordinates and poor spectra stability. Here, we report Cs(3)CeBr(x)I(6−x) (x = 0 to 6) with the cryolite-like structure and stable and tunable color coordinates from (0.17, 0.02) to (0.15, 0.04). Further encouraged by the short exciton lifetime (26.1 ns) and high photoluminescence quantum yield (~76%), we construct Cs(3)CeBr(x)I(6−x)-based rare-earth LEDs via thermal evaporation. A seed layer strategy is conducted to improve the device’s performance. The optimal Cs(3)CeI(6) device achieves a maximum external quantum efficiency of 3.5% and a luminance of 470 cd m(−2) with stable deep-blue color coordinates of (0.15, 0.04). Our work opens another avenue to achieving efficient and spectrally stable deep-blue LEDs. American Association for the Advancement of Science 2022-12-16 /pmc/articles/PMC9757739/ /pubmed/36525491 http://dx.doi.org/10.1126/sciadv.abq2148 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Physical and Materials Sciences
Guo, Qingxun
Wang, Liang
Yang, Longbo
Duan, Jiashun
Du, Hainan
Ji, Guoqi
Liu, Nian
Zhao, Xue
Chen, Chao
Xu, Ling
Gao, Liang
Luo, Jiajun
Tang, Jiang
Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission
title Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission
title_full Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission
title_fullStr Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission
title_full_unstemmed Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission
title_short Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission
title_sort spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(iii) halides with nanosecond d-f emission
topic Physical and Materials Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9757739/
https://www.ncbi.nlm.nih.gov/pubmed/36525491
http://dx.doi.org/10.1126/sciadv.abq2148
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