A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications

A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications

Abstract In recent, the quantum yield (QY) and stability of green quantum dots (QDs) have been significantly improved. However, most of the progresses were achieved by using alloyed QDs, and the control of green emission QDs still remains challenging. Herein, we report a novel method for synthesizin...

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Autores principales: Junjie Hao, Haochen Liu, Jun Miao, Rui Lu, Ziming Zhou, Bingxin Zhao, Bin Xie, Jiaji Cheng, Kai Wang, Marie-Helene Delville
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2019
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Medicine
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Science
Q
Acceso en línea:https://doaj.org/article/ed19fc666c5f484a9ec71ea4c6ee0b91
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spelling oai:doaj.org-article:ed19fc666c5f484a9ec71ea4c6ee0b912021-12-02T15:08:21ZA facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications10.1038/s41598-019-48469-72045-2322https://doaj.org/article/ed19fc666c5f484a9ec71ea4c6ee0b912019-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-48469-7https://doaj.org/toc/2045-2322Abstract In recent, the quantum yield (QY) and stability of green quantum dots (QDs) have been significantly improved. However, most of the progresses were achieved by using alloyed QDs, and the control of green emission QDs still remains challenging. Herein, we report a novel method for synthesizing thick-shell structure quantum dots (TSQDs) with saturated green-emitting where tri-n-octylphosphine (TOP) was used as both ligand and solvent to extract the redundant ions from the QDs surface and remove the lattice imperfections before any surface inorganic layer-by-layer coating. The as-prepared TSQDs demonstrate enhanced luminescent properties including high QY reaching up to 75%, full width at half maximum (FWHM) remaining close to 26 nm and tunable precise emission properties (532 nm), which can be utilized to perform 91% of the International Telecommunication Union (ITU) Recommendation BT. 2020 (Rec. 2020) for high definition and color gamut displays.Junjie HaoHaochen LiuJun MiaoRui LuZiming ZhouBingxin ZhaoBin XieJiaji ChengKai WangMarie-Helene DelvilleNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Junjie Hao
Haochen Liu
Jun Miao
Rui Lu
Ziming Zhou
Bingxin Zhao
Bin Xie
Jiaji Cheng
Kai Wang
Marie-Helene Delville
A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications
description Abstract In recent, the quantum yield (QY) and stability of green quantum dots (QDs) have been significantly improved. However, most of the progresses were achieved by using alloyed QDs, and the control of green emission QDs still remains challenging. Herein, we report a novel method for synthesizing thick-shell structure quantum dots (TSQDs) with saturated green-emitting where tri-n-octylphosphine (TOP) was used as both ligand and solvent to extract the redundant ions from the QDs surface and remove the lattice imperfections before any surface inorganic layer-by-layer coating. The as-prepared TSQDs demonstrate enhanced luminescent properties including high QY reaching up to 75%, full width at half maximum (FWHM) remaining close to 26 nm and tunable precise emission properties (532 nm), which can be utilized to perform 91% of the International Telecommunication Union (ITU) Recommendation BT. 2020 (Rec. 2020) for high definition and color gamut displays.
format article
author Junjie Hao
Haochen Liu
Jun Miao
Rui Lu
Ziming Zhou
Bingxin Zhao
Bin Xie
Jiaji Cheng
Kai Wang
Marie-Helene Delville
author_facet Junjie Hao
Haochen Liu
Jun Miao
Rui Lu
Ziming Zhou
Bingxin Zhao
Bin Xie
Jiaji Cheng
Kai Wang
Marie-Helene Delville
author_sort Junjie Hao
title A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications
title_short A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications
title_full A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications
title_fullStr A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications
title_full_unstemmed A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: towards QDs based LED applications
title_sort facile route to synthesize cdse/zns thick-shell quantum dots with precisely controlled green emission properties: towards qds based led applications
publisher Nature Portfolio
publishDate 2019
url https://doaj.org/article/ed19fc666c5f484a9ec71ea4c6ee0b91
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