Nano Letters, volume 22, issue 10, pages 4067-4073
ZnF2-Assisted Synthesis of Highly Luminescent InP/ZnSe/ZnS Quantum Dots for Efficient and Stable Electroluminescence
HAIYANG LI
1, 2, 3
,
Wenjing Zhang
2
,
Yangyang Bian
2
,
Tae Kyu Ahn
3
,
Huaibin Shen
2
,
Botao Ji
1
Publication type: Journal Article
Publication date: 2022-05-10
Journal:
Nano Letters
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 10.8
ISSN: 15306984, 15306992
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Bioengineering
Abstract
High-quality InP-based quantum dots (QDs) have become very promising, environmentally benign light emitters for display applications, but their synthesis generally entails hazardous hydrofluoric acid. Here, we present a highly facile route to InP/ZnSe/ZnS core/shell/shell QDs with a near-unity photoluminescence quantum yield. As the key additive, the inorganic salt ZnF2 mildly reacts with carboxylic acid at a high temperature and in situ generates HF, which eliminates surface oxide impurities, thus facilitating epitaxial shell growth. The resulting InP/ZnSe/ZnS QDs exhibit a narrower emission line width and better thermal stability in comparison with QDs synthesized with hydrofluoric acid. Light-emitting diodes using large-sized InP/ZnSe/ZnS QDs without replacing original ligands achieve the highest peak external quantum efficiency of 22.2%, to the best of our knowledge, along with a maximum brightness of >110 000 cd/m2 and a T95 lifetime of >32 000 h at 100 cd/m2. This safe approach is anticipated to be applied for a wide range of III-V QDs.
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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LI H. et al. ZnF2-Assisted Synthesis of Highly Luminescent InP/ZnSe/ZnS Quantum Dots for Efficient and Stable Electroluminescence // Nano Letters. 2022. Vol. 22. No. 10. pp. 4067-4073.
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LI H., Zhang W., Bian Y., Ahn T. K., Shen H., Ji B. ZnF2-Assisted Synthesis of Highly Luminescent InP/ZnSe/ZnS Quantum Dots for Efficient and Stable Electroluminescence // Nano Letters. 2022. Vol. 22. No. 10. pp. 4067-4073.
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TY - JOUR
DO - 10.1021/acs.nanolett.2c00763
UR - https://doi.org/10.1021/acs.nanolett.2c00763
TI - ZnF2-Assisted Synthesis of Highly Luminescent InP/ZnSe/ZnS Quantum Dots for Efficient and Stable Electroluminescence
T2 - Nano Letters
AU - Bian, Yangyang
AU - Ahn, Tae Kyu
AU - Shen, Huaibin
AU - Ji, Botao
AU - LI, HAIYANG
AU - Zhang, Wenjing
PY - 2022
DA - 2022/05/10 00:00:00
PB - American Chemical Society (ACS)
SP - 4067-4073
IS - 10
VL - 22
SN - 1530-6984
SN - 1530-6992
ER -
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@article{2022_LI,
author = {Yangyang Bian and Tae Kyu Ahn and Huaibin Shen and Botao Ji and HAIYANG LI and Wenjing Zhang},
title = {ZnF2-Assisted Synthesis of Highly Luminescent InP/ZnSe/ZnS Quantum Dots for Efficient and Stable Electroluminescence},
journal = {Nano Letters},
year = {2022},
volume = {22},
publisher = {American Chemical Society (ACS)},
month = {may},
url = {https://doi.org/10.1021/acs.nanolett.2c00763},
number = {10},
pages = {4067--4073},
doi = {10.1021/acs.nanolett.2c00763}
}
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LI, HAIYANG, et al. “ZnF2-Assisted Synthesis of Highly Luminescent InP/ZnSe/ZnS Quantum Dots for Efficient and Stable Electroluminescence.” Nano Letters, vol. 22, no. 10, May. 2022, pp. 4067-4073. https://doi.org/10.1021/acs.nanolett.2c00763.