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Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode

Semiconductor quantum dots (QDs) are a promising luminescent phosphor for next-generation lightings and displays. In particular, QD-based white light-emitting diodes (WLEDs) are considered to be the candidate light sources with the most potential for application in displays. In this work, we synthes...

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Autores principales: Chen, Xi, Li, Jingzhou, Zhong, Yichi, Li, Xin, Pan, Mingzhong, Qi, Hongxing, Dong, Hongxing, Zhang, Long
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8957214/
https://www.ncbi.nlm.nih.gov/pubmed/35345537
http://dx.doi.org/10.3389/fchem.2022.845206
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author Chen, Xi
Li, Jingzhou
Zhong, Yichi
Li, Xin
Pan, Mingzhong
Qi, Hongxing
Dong, Hongxing
Zhang, Long
author_facet Chen, Xi
Li, Jingzhou
Zhong, Yichi
Li, Xin
Pan, Mingzhong
Qi, Hongxing
Dong, Hongxing
Zhang, Long
author_sort Chen, Xi
collection PubMed
description Semiconductor quantum dots (QDs) are a promising luminescent phosphor for next-generation lightings and displays. In particular, QD-based white light-emitting diodes (WLEDs) are considered to be the candidate light sources with the most potential for application in displays. In this work, we synthesized quaternary/ternary core/shell alloyed CdZnSeS/ZnSeS QDs with high bright emission intensity. The QDs show good thermal stability by performing high temperature-dependent experiments that range from 295 to 433 K. Finally, the WLED based on the CdZnSeS/ZnSeS QDs exhibits a luminous efficiency (LE) of 28.14 lm/W, an external quantum efficiency (EQE) of 14.86%, and a warm bright sunlight close to the spectrum of daylight (Commission Internationale de l'éclairage (CIE) coordinates 0.305, 0.371). Moreover, the photoluminescence (PL) intensity, LE, EQE, and correlated color temperature (CCT) of as-prepared QD WLED remained relatively stable with only slight changes in the luminescence stability experiment.
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spelling pubmed-89572142022-03-27 Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode Chen, Xi Li, Jingzhou Zhong, Yichi Li, Xin Pan, Mingzhong Qi, Hongxing Dong, Hongxing Zhang, Long Front Chem Chemistry Semiconductor quantum dots (QDs) are a promising luminescent phosphor for next-generation lightings and displays. In particular, QD-based white light-emitting diodes (WLEDs) are considered to be the candidate light sources with the most potential for application in displays. In this work, we synthesized quaternary/ternary core/shell alloyed CdZnSeS/ZnSeS QDs with high bright emission intensity. The QDs show good thermal stability by performing high temperature-dependent experiments that range from 295 to 433 K. Finally, the WLED based on the CdZnSeS/ZnSeS QDs exhibits a luminous efficiency (LE) of 28.14 lm/W, an external quantum efficiency (EQE) of 14.86%, and a warm bright sunlight close to the spectrum of daylight (Commission Internationale de l'éclairage (CIE) coordinates 0.305, 0.371). Moreover, the photoluminescence (PL) intensity, LE, EQE, and correlated color temperature (CCT) of as-prepared QD WLED remained relatively stable with only slight changes in the luminescence stability experiment. Frontiers Media S.A. 2022-03-08 /pmc/articles/PMC8957214/ /pubmed/35345537 http://dx.doi.org/10.3389/fchem.2022.845206 Text en Copyright © 2022 Chen, Li, Zhong, Li, Pan, Qi, Dong and Zhang. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Chen, Xi
Li, Jingzhou
Zhong, Yichi
Li, Xin
Pan, Mingzhong
Qi, Hongxing
Dong, Hongxing
Zhang, Long
Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode
title Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode
title_full Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode
title_fullStr Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode
title_full_unstemmed Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode
title_short Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode
title_sort highly efficient and stable cdznses/znses quantum dots for application in white light-emitting diode
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8957214/
https://www.ncbi.nlm.nih.gov/pubmed/35345537
http://dx.doi.org/10.3389/fchem.2022.845206
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