Advanced Optical Materials, volume 10, issue 10, pages 2102508

Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED

Publication typeJournal Article
Publication date2022-04-05
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor9
ISSN21951071
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Abstract
A novel graded‐HOMO‐level hole transport polymer (g‐HTP) is proposed for the first time with spiro‐polyfluorene (sPF) as the main chain and the three hole‐transporting moieties triphenyl amine (TPA), carbazole (Cz), and N,N′‐dicarbazolyl‐3,5‐benzene (mCP) as side chains for effective hole injection across the large barrier 1.4 eV into the green‐emission core–shell quantum dot (QD) CdSe/ZnS emission layer in inverted QD light‐emitting diode (i‐QLED): ITO/ZnO/QD/HTP/MoO3/Al, in which both oleophilic ligands (OA and TOP) in the QD are partially removed from QD surface by annealing at 270 °C for preventing dissolution by solvent in subsequent coating of hole transport material (HTM) solutions atop and also improving electron and hole mobilities, especially the former. The proposed g‐HTP with various m:n mole ratios of mCP to TPA/Cz moieties along with various reported HTMs (PVK, Poly‐TPD and TFB) are investigated. Among them, the proposed g‐HTP with the comonomer mole ratio 1:1 gives the best performance ηmax 36.1 cd A−1 and Bmax 208 600 cd m−2, which is the highest performance among the reported i‐QLEDs with single hole‐transport layer ever documented. In addition, its efficiency roll off is low from 35.8 cd A−1 at 10 000 cd m−2 to 31.1 cd A−1 at 100 000 cd m−2.

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Wu S. E. et al. Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED // Advanced Optical Materials. 2022. Vol. 10. No. 10. p. 2102508.
GOST all authors (up to 50) Copy
Wu S. E., Sharma S., Chen H. L., Chen S., Komarov P. V., Ivanov V. A., Khokhlov A. R. Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED // Advanced Optical Materials. 2022. Vol. 10. No. 10. p. 2102508.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1002/adom.202102508
UR - https://doi.org/10.1002%2Fadom.202102508
TI - Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED
T2 - Advanced Optical Materials
AU - Wu, Shuo En
AU - Sharma, Sunil
AU - Chen, Hsin Lung
AU - Khokhlov, Alexei R.
AU - Komarov, Pavel V
AU - Ivanov, Viktor A.
AU - Chen, Show-An
PY - 2022
DA - 2022/04/05 00:00:00
PB - Wiley
SP - 2102508
IS - 10
VL - 10
SN - 2195-1071
ER -
BibTex |
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BibTex Copy
@article{2022_Wu
author = {Shuo En Wu and Sunil Sharma and Hsin Lung Chen and Alexei R. Khokhlov and Pavel V Komarov and Viktor A. Ivanov and Show-An Chen},
title = {Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED},
journal = {Advanced Optical Materials},
year = {2022},
volume = {10},
publisher = {Wiley},
month = {apr},
url = {https://doi.org/10.1002%2Fadom.202102508},
number = {10},
pages = {2102508},
doi = {10.1002/adom.202102508}
}
MLA
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Wu, Shuo En, et al. “Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED.” Advanced Optical Materials, vol. 10, no. 10, Apr. 2022, p. 2102508. https://doi.org/10.1002%2Fadom.202102508.
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