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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...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2022
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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. |
format | Online Article Text |
id | pubmed-8957214 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
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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