DataVXAdvanced Optical MaterialsPaper
journal article·2022-08

High Quantum Yield Blue InP/ZnS/ZnS Quantum Dots Based on Bromine Passivation for Efficient Blue Light‐Emitting Diodes

Wenda Zhang, Yangzhi Tan, Xijian Duan, Fangqing Zhao, Haochen Liu, Wei Chen, Pai Liu, Xiaogang Liu, Kai Wang, Zhikuan Zhang, Xiao Wei Sun

Advanced Optical Materials· Volume 10· Issue 15
Publisher page
Source abstract

Abstract

Abstract Red and green InP quantum dots (QDs) already have been demonstrated with excellent luminescence performance closing the gap with CdSe‐based QDs. However, the performance of blue InP QDs still lags behind that of red and green QDs. For blue InP QDs synthesized by aminophosphine and zinc iodide, the inherent I– possesses weak passivation ability. By introducing Br– with a smaller ion radius and larger binding energy, the quantum yield of blue InP QDs is increased from 54% to 93%, which is the highest value reported so far. Meanwhile, the long‐chain 1‐dodecanethiol is replaced by the short‐chain 1‐octanethiol through ligand exchange to increase the carrier injection efficiency. The blue quantum dot light‐emitting diodes (QLEDs) made of these QDs showed an external quantum efficiency of 2.6%, which is notably the highest blue InP QLED reported so far.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Quantum Dots Synthesis And Properties · Advanced biosensing and bioanalysis techniques · Nanocluster Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Energy Conversion and Storage Technologies Ministry of Education Shenzhen 518055 P. R. China

Guangdong‐Hong Kong‐Macao Joint Laboratory for Photonic‐Thermal‐Electrical Energy Materials and Devices Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen 518055 China

SUSTech‐Huawei Joint Lab for Photonics Industry Southern University of Science and Technology Shenzhen 518055 China

Fluorescence Research Group Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore

Shenzhen Planck Innovation Technologies Ltd Shenzhen 518116 P. R. China

Funding

National Natural Science Foundation of China

References (31)

Show source-provided references
1. 10.1021/jacs.8b1290810.1021/jacs.8b12908 ↗
2. 10.1021/acs.chemmater.8b0367110.1021/acs.chemmater.8b03671 ↗
3. 10.1021/acsenergylett.9b0285110.1021/acsenergylett.9b02851 ↗
4. 10.1039/C8TC03331E10.1039/C8TC03331E ↗
5. 10.1038/srep3009410.1038/srep30094 ↗
6. 10.1016/j.physe.2017.03.02910.1016/j.physe.2017.03.029 ↗
7. 10.1039/C7TC02927F10.1039/C7TC02927F ↗
8. 10.1039/C8CC09740B10.1039/C8CC09740B ↗
9. 10.1021/acs.jpclett.9b0356710.1021/acs.jpclett.9b03567 ↗
10. 10.1038/s41586-019-1771-510.1038/s41586-019-1771-5 ↗
11. 10.1002/adfm.20200845310.1002/adfm.202008453 ↗
12. 10.1021/acs.chemmater.0c0055110.1021/acs.chemmater.0c00551 ↗
13. 10.1002/anie.20090563210.1002/anie.200905632 ↗
14. 10.1002/adma.20110499010.1002/adma.201104990 ↗
15. 10.1021/jacs.6b0125410.1021/jacs.6b01254 ↗
16. 10.1021/acsomega.9b0147110.1021/acsomega.9b01471 ↗
17. 10.1103/PhysRevB.65.16533310.1103/PhysRevB.65.165333 ↗
18. 10.1002/adfm.20200530310.1002/adfm.202005303 ↗
19. 10.1021/acs.chemmater.6b0245610.1021/acs.chemmater.6b02456 ↗
20. 10.1002/ange.20160028910.1002/ange.201600289 ↗
21. Zheng W. · Chin. Battery Ind. · 2005 · 10 · 144
22. 10.1016/j.vibspec.2016.06.01610.1016/j.vibspec.2016.06.016 ↗
23. 10.1002/lpor.20160022710.1002/lpor.201600227 ↗
24. 10.1002/adom.20190209210.1002/adom.201902092 ↗
25. 10.1021/nl062320810.1021/nl0623208 ↗
26. 10.1103/PhysRevLett.89.18680210.1103/PhysRevLett.89.186802 ↗
27. 10.1364/OE.44257810.1364/OE.442578 ↗
28. 10.1038/s43246-020-00084-010.1038/s43246-020-00084-0 ↗
29. 10.1063/1.481943610.1063/1.4819436 ↗
30. 10.1063/5.007150810.1063/5.0071508 ↗
31. 10.1021/acs.nanolett.5b0184910.1021/acs.nanolett.5b01849 ↗