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High-Performance Blue Quantum Dot Light Emitting Diode via Solvent Optimization Strategy for ZnO Nanoparticles

Here, we report on the high-performance blue quantum dots (QDs) light-emitting diodes (QLEDs), in which the ZnO nanoparticles (NPs) are employed as the electron transport layer (ETL) and optimized with different alcohol solvents. The experimental results demonstrate that the properties of solvent us...

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Detalles Bibliográficos
Autores principales: Xu, Ji, Wang, Lixi, Zhao, Xueliang, Shi, Yutong, Shi, Yongjiao, Liu, Ting
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8070000/
https://www.ncbi.nlm.nih.gov/pubmed/33918667
http://dx.doi.org/10.3390/nano11040959
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author Xu, Ji
Wang, Lixi
Zhao, Xueliang
Shi, Yutong
Shi, Yongjiao
Liu, Ting
author_facet Xu, Ji
Wang, Lixi
Zhao, Xueliang
Shi, Yutong
Shi, Yongjiao
Liu, Ting
author_sort Xu, Ji
collection PubMed
description Here, we report on the high-performance blue quantum dots (QDs) light-emitting diodes (QLEDs), in which the ZnO nanoparticles (NPs) are employed as the electron transport layer (ETL) and optimized with different alcohol solvents. The experimental results demonstrate that the properties of solvent used for ZnO NPs—such as polarity, viscosity and boiling point—play a crucial role in the quality of film where they modulate the electron injection across the QDs/ETL interface. The maximum current efficiency of 3.02 cd/A and external quantum efficiency (EQE) of 3.3% are achieved for blue QLEDs with ZnO NPs dispersed in butanol, exhibiting obvious enhancement compared with the other solvents. This work provides a new method to select proper solvent for ETL which can further improve the device performance.
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spelling pubmed-80700002021-04-26 High-Performance Blue Quantum Dot Light Emitting Diode via Solvent Optimization Strategy for ZnO Nanoparticles Xu, Ji Wang, Lixi Zhao, Xueliang Shi, Yutong Shi, Yongjiao Liu, Ting Nanomaterials (Basel) Article Here, we report on the high-performance blue quantum dots (QDs) light-emitting diodes (QLEDs), in which the ZnO nanoparticles (NPs) are employed as the electron transport layer (ETL) and optimized with different alcohol solvents. The experimental results demonstrate that the properties of solvent used for ZnO NPs—such as polarity, viscosity and boiling point—play a crucial role in the quality of film where they modulate the electron injection across the QDs/ETL interface. The maximum current efficiency of 3.02 cd/A and external quantum efficiency (EQE) of 3.3% are achieved for blue QLEDs with ZnO NPs dispersed in butanol, exhibiting obvious enhancement compared with the other solvents. This work provides a new method to select proper solvent for ETL which can further improve the device performance. MDPI 2021-04-09 /pmc/articles/PMC8070000/ /pubmed/33918667 http://dx.doi.org/10.3390/nano11040959 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xu, Ji
Wang, Lixi
Zhao, Xueliang
Shi, Yutong
Shi, Yongjiao
Liu, Ting
High-Performance Blue Quantum Dot Light Emitting Diode via Solvent Optimization Strategy for ZnO Nanoparticles
title High-Performance Blue Quantum Dot Light Emitting Diode via Solvent Optimization Strategy for ZnO Nanoparticles
title_full High-Performance Blue Quantum Dot Light Emitting Diode via Solvent Optimization Strategy for ZnO Nanoparticles
title_fullStr High-Performance Blue Quantum Dot Light Emitting Diode via Solvent Optimization Strategy for ZnO Nanoparticles
title_full_unstemmed High-Performance Blue Quantum Dot Light Emitting Diode via Solvent Optimization Strategy for ZnO Nanoparticles
title_short High-Performance Blue Quantum Dot Light Emitting Diode via Solvent Optimization Strategy for ZnO Nanoparticles
title_sort high-performance blue quantum dot light emitting diode via solvent optimization strategy for zno nanoparticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8070000/
https://www.ncbi.nlm.nih.gov/pubmed/33918667
http://dx.doi.org/10.3390/nano11040959
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