Matrix-Free Thermally Activated Delayed Fluorescent Carbon Dots-Based Electroluminescent Light-Emitting Diodes Exceeding 5.6% External Quantum Efficiency
Publication type: Journal Article
Publication date: 2024-02-22
scimago Q1
wos Q1
SJR: 2.967
CiteScore: 14.9
Impact factor: 9.1
ISSN: 15306984, 15306992
PubMed ID:
38385631
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Bioengineering
Abstract
Carbon dots (CDs) are promising luminescent emission layer materials for next generation electroluminescent light emitting diodes (EL-LEDs) due to their many advantages, such as environmental friendliness, low cost, and high stability. However, limited by the spin-forbidden properties of the triplet transition, it is difficult to improve the external quantum efficiency (EQE) of fluorescent CDs-based EL-LEDs. Meanwhile, traditional thermally activated delayed fluorescent (TADF) CDs prepared using coating strategies are difficult to utilize in EL-LEDs due to the nonconductivity of the coating agent. Herein, we successfully developed matrix-free TADF CDs with yellow emission and achieved a device EQE of 5.68%, which is the highest value reported in CDs-based EL-LEDs. In addition, we also developed white EL-LEDs with an EQE of 1.70%. This study highlights the importance of interactions between precursors in modulating the electroluminescence properties of TADF emitters and provides an effective design principle for matrix-free TADF CDs.
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Metrics
40
Total citations:
40
Citations from 2024:
39
(97.5%)
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MLA
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GOST
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Wang B. et al. Matrix-Free Thermally Activated Delayed Fluorescent Carbon Dots-Based Electroluminescent Light-Emitting Diodes Exceeding 5.6% External Quantum Efficiency // Nano Letters. 2024. Vol. 24. No. 9. pp. 2904-2911.
GOST all authors (up to 50)
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Wang B., Wang H., Wang H. W., Hu Y., Waterhouse G. I. N., Lu S. Matrix-Free Thermally Activated Delayed Fluorescent Carbon Dots-Based Electroluminescent Light-Emitting Diodes Exceeding 5.6% External Quantum Efficiency // Nano Letters. 2024. Vol. 24. No. 9. pp. 2904-2911.
Cite this
RIS
Copy
TY - JOUR
DO - 10.1021/acs.nanolett.4c00090
UR - https://pubs.acs.org/doi/10.1021/acs.nanolett.4c00090
TI - Matrix-Free Thermally Activated Delayed Fluorescent Carbon Dots-Based Electroluminescent Light-Emitting Diodes Exceeding 5.6% External Quantum Efficiency
T2 - Nano Letters
AU - Wang, Boyang
AU - Wang, Hongwei
AU - Wang, Hong Wei
AU - Hu, Yongsheng
AU - Waterhouse, Geoffrey I. N.
AU - Lu, Siyu
PY - 2024
DA - 2024/02/22
PB - American Chemical Society (ACS)
SP - 2904-2911
IS - 9
VL - 24
PMID - 38385631
SN - 1530-6984
SN - 1530-6992
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2024_Wang,
author = {Boyang Wang and Hongwei Wang and Hong Wei Wang and Yongsheng Hu and Geoffrey I. N. Waterhouse and Siyu Lu},
title = {Matrix-Free Thermally Activated Delayed Fluorescent Carbon Dots-Based Electroluminescent Light-Emitting Diodes Exceeding 5.6% External Quantum Efficiency},
journal = {Nano Letters},
year = {2024},
volume = {24},
publisher = {American Chemical Society (ACS)},
month = {feb},
url = {https://pubs.acs.org/doi/10.1021/acs.nanolett.4c00090},
number = {9},
pages = {2904--2911},
doi = {10.1021/acs.nanolett.4c00090}
}
Cite this
MLA
Copy
Wang, Boyang, et al. “Matrix-Free Thermally Activated Delayed Fluorescent Carbon Dots-Based Electroluminescent Light-Emitting Diodes Exceeding 5.6% External Quantum Efficiency.” Nano Letters, vol. 24, no. 9, Feb. 2024, pp. 2904-2911. https://pubs.acs.org/doi/10.1021/acs.nanolett.4c00090.
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