Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes

Abstracts Quantum dot light-emitting diodes (QD-LEDs) are considered as competitive candidate for next-generation displays or lightings. Recent advances in the synthesis of core/shell quantum dots (QDs) and tailoring procedures for achieving their high quantum yield have facilitated the emergence of...

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Autores principales:	Sung-Min Jung, Tae Hoon Lee, Sang Yun Bang, Soo Deok Han, Dong-Wook Shin, Sanghyo Lee, Hyung Woo Choi, Yo-Han Suh, Xiang-Bing Fan, Jeong-Wan Jo, Shijie Zhan, Jiajie Yang, Chatura Samarakoon, Yoonwoo Kim, Luigi G. Occhipinti, Gehan Amaratunga, Jong Min Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
Acceso en línea:	https://doaj.org/article/b5a1e8a8ae7c4555b472795911191eb7
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spelling	oai:doaj.org-article:b5a1e8a8ae7c4555b472795911191eb72021-12-02T18:46:59ZModelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes10.1038/s41524-021-00591-92057-3960https://doaj.org/article/b5a1e8a8ae7c4555b472795911191eb72021-07-01T00:00:00Zhttps://doi.org/10.1038/s41524-021-00591-9https://doaj.org/toc/2057-3960Abstracts Quantum dot light-emitting diodes (QD-LEDs) are considered as competitive candidate for next-generation displays or lightings. Recent advances in the synthesis of core/shell quantum dots (QDs) and tailoring procedures for achieving their high quantum yield have facilitated the emergence of high-performance QD-LEDs. Meanwhile, the charge-carrier dynamics in QD-LED devices, which constitutes the remaining core research area for further improvement of QD-LEDs, is, however, poorly understood yet. Here, we propose a charge transport model in which the charge-carrier dynamics in QD-LEDs are comprehensively described by computer simulations. The charge-carrier injection is modelled by the carrier-capturing process, while the effect of electric fields at their interfaces is considered. The simulated electro-optical characteristics of QD-LEDs, such as the luminance, current density and external quantum efficiency (EQE) curves with varying voltages, show excellent agreement with experiments. Therefore, our computational method proposed here provides a useful means for designing and optimising high-performance QD-LED devices.Sung-Min JungTae Hoon LeeSang Yun BangSoo Deok HanDong-Wook ShinSanghyo LeeHyung Woo ChoiYo-Han SuhXiang-Bing FanJeong-Wan JoShijie ZhanJiajie YangChatura SamarakoonYoonwoo KimLuigi G. OcchipintiGehan AmaratungaJong Min KimNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Computer softwareQA76.75-76.765ENnpj Computational Materials, Vol 7, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765 Sung-Min Jung Tae Hoon Lee Sang Yun Bang Soo Deok Han Dong-Wook Shin Sanghyo Lee Hyung Woo Choi Yo-Han Suh Xiang-Bing Fan Jeong-Wan Jo Shijie Zhan Jiajie Yang Chatura Samarakoon Yoonwoo Kim Luigi G. Occhipinti Gehan Amaratunga Jong Min Kim Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes
description	Abstracts Quantum dot light-emitting diodes (QD-LEDs) are considered as competitive candidate for next-generation displays or lightings. Recent advances in the synthesis of core/shell quantum dots (QDs) and tailoring procedures for achieving their high quantum yield have facilitated the emergence of high-performance QD-LEDs. Meanwhile, the charge-carrier dynamics in QD-LED devices, which constitutes the remaining core research area for further improvement of QD-LEDs, is, however, poorly understood yet. Here, we propose a charge transport model in which the charge-carrier dynamics in QD-LEDs are comprehensively described by computer simulations. The charge-carrier injection is modelled by the carrier-capturing process, while the effect of electric fields at their interfaces is considered. The simulated electro-optical characteristics of QD-LEDs, such as the luminance, current density and external quantum efficiency (EQE) curves with varying voltages, show excellent agreement with experiments. Therefore, our computational method proposed here provides a useful means for designing and optimising high-performance QD-LED devices.
format	article
author	Sung-Min Jung Tae Hoon Lee Sang Yun Bang Soo Deok Han Dong-Wook Shin Sanghyo Lee Hyung Woo Choi Yo-Han Suh Xiang-Bing Fan Jeong-Wan Jo Shijie Zhan Jiajie Yang Chatura Samarakoon Yoonwoo Kim Luigi G. Occhipinti Gehan Amaratunga Jong Min Kim
author_facet	Sung-Min Jung Tae Hoon Lee Sang Yun Bang Soo Deok Han Dong-Wook Shin Sanghyo Lee Hyung Woo Choi Yo-Han Suh Xiang-Bing Fan Jeong-Wan Jo Shijie Zhan Jiajie Yang Chatura Samarakoon Yoonwoo Kim Luigi G. Occhipinti Gehan Amaratunga Jong Min Kim
author_sort	Sung-Min Jung
title	Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes
title_short	Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes
title_full	Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes
title_fullStr	Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes
title_full_unstemmed	Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes
title_sort	modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b5a1e8a8ae7c4555b472795911191eb7
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Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes

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