DataVXAdvanced Optical MaterialsPaper
journal article·2020-06

Atomic Layer Deposition Assisted Encapsulation of Quantum Dot Luminescent Microspheres toward Display Applications

Fan Fang, Mengjia Liu, Wei Chen, Hongcheng Yang, Yizun Liu, Xiang Li, Junjie Hao, Bing Xu, Dan Wu, Kun Cao, Wei Lei, Peter Müller‐Buschbaum, Xiao Wei Sun, Rong Chen, Kai Wang

Advanced Optical Materials· Volume 8· Issue 12
Publisher page
Source abstract

Abstract

Abstract Quantum dots (QDs) are promising for being used in advanced displays due to their outstanding emission properties. Herein, a novel encapsulation method for QDs is reported and ultra‐stable QDs@SiO2@Al2O3 luminescent microspheres (QLuMiS) are obtained by combining a sol–gel method for the intermediate SiO2 layer with a fluidized powder atomic layer deposition (ALD) for the outer Al2O3 layer. The rich hydroxyl coverage on the QDs@SiO2 surface provides abundant chemisorption sites, which are beneficial for the deposition of Al2O3 in the ALD process. Simultaneously, the water‐oxygen channels in the SiO2 layer are blocked by the Al2O3 layer, which protects the QDs against deterioration. Consequently, the QLuMiS exhibit an excellent stability with 86% of the initial light conversion efficiency after 1000 h of blue light aging under a light power density of 2000 mW cm−2. Such stability is significantly better than that of QDs@Al2O3 and QDs@SiO2 samples. Moreover, under this strong irradiation aging condition with blue light, the extrapolated lifetime (L50) of QLuMiS is 4969 h, which is ten times longer than that of QDs@SiO2 and is the best record as far as is known. Finally, a prototype of a QLuMiS‐based cellphone screen with a wide color gamut of 115% NTSC is demonstrated.
Source: crossref · Quality: baseline

Research context

Materials processing

OpenAlex topics: Quantum Dots Synthesis And Properties · Luminescence Properties of Advanced Materials · Perovskite Materials and Applications

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

Affiliations

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

School of Electronic Science and Engineering Southeast University Nanjing 210096 China

State Key Laboratory of Digital of Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

Physik‐Department Lehrstuhl für Funktionelle Materialien Technische Universität München James‐Franck‐Straße 1 Garching 85748 Germany

Shenzhen Planck Innovation Technology Co., Ltd. Huancheng South Road, Bantian Street, Longgang Shenzhen 518116 China

Heinz Maier‐Leibnitz Zentrum (MLZ) Technische Universität München Lichtenbergstraße 1 Garching 85748 Germany

Funding

National Natural Science Foundation of China · National Basic Research Program of China · Natural Science Foundation of Guangdong Province · Deutsche Forschungsgemeinschaft · China Scholarship Council

References (52)

Show source-provided references
1. 10.1021/ja003633m10.1021/ja003633m ↗
2. 10.1038/3500353510.1038/35003535 ↗
3. 10.1021/ja970754m10.1021/ja970754m ↗
4. 10.1021/acs.chemmater.7b0069210.1021/acs.chemmater.7b00692 ↗
5. 10.1002/adfm.20170600010.1002/adfm.201706000 ↗
6. 10.1002/adfm.20160010910.1002/adfm.201600109 ↗
7. 10.1002/anie.20120633310.1002/anie.201206333 ↗
8. 10.1002/adma.20100052510.1002/adma.201000525 ↗
9. 10.1002/adma.20070284610.1002/adma.200702846 ↗
10. 10.1021/jp100415k10.1021/jp100415k ↗
11. 10.1021/acs.jpclett.8b0046310.1021/acs.jpclett.8b00463 ↗
12. 10.1002/anie.20150113110.1002/anie.201501131 ↗
13. 10.1021/cm070468210.1021/cm0704682 ↗
14. 10.1021/ja106710m10.1021/ja106710m ↗
15. 10.1039/c0jm03605f10.1039/c0jm03605f ↗
16. 10.1016/j.apsusc.2017.09.12510.1016/j.apsusc.2017.09.125 ↗
17. 10.1080/15980316.2018.149881010.1080/15980316.2018.1498810 ↗
18. 10.1016/j.surfcoat.2014.05.06110.1016/j.surfcoat.2014.05.061 ↗
19. 10.1002/adma.20160265110.1002/adma.201602651 ↗
20. 10.1021/jacs.6b1068110.1021/jacs.6b10681 ↗
21. 10.1021/jacs.5b0546210.1021/jacs.5b05462 ↗
22. 10.1021/jacs.5b1310110.1021/jacs.5b13101 ↗
23. 10.1002/anie.20170326410.1002/anie.201703264 ↗
24. 10.1088/1361-6528/ab2a3310.1088/1361-6528/ab2a33 ↗
25. 10.1039/C8NR08778D10.1039/C8NR08778D ↗
26. 10.1007/s40843-019-9435-710.1007/s40843-019-9435-7 ↗
27. 10.1002/ppsc.20150007410.1002/ppsc.201500074 ↗
28. 10.1515/nanoph-2016-003710.1515/nanoph-2016-0037 ↗
29. 10.1016/j.matlet.2013.08.09110.1016/j.matlet.2013.08.091 ↗
30. 10.1002/smll.20070099710.1002/smll.200700997 ↗
31. 10.1021/acs.jpcc.6b0439810.1021/acs.jpcc.6b04398 ↗
32. 10.1021/acsami.7b0762710.1021/acsami.7b07627 ↗
33. 10.1021/nl202884810.1021/nl2028848 ↗
34. 10.1063/1.492634910.1063/1.4926349 ↗
35. 10.1039/C9TC01063G10.1039/C9TC01063G ↗
36. 10.1002/anie.20170370310.1002/anie.201703703 ↗
37. 10.1021/acs.jpcc.5b1165310.1021/acs.jpcc.5b11653 ↗
38. 10.1021/acs.chemmater.8b0309610.1021/acs.chemmater.8b03096 ↗
39. 10.1021/acs.jpclett.9b0086910.1021/acs.jpclett.9b00869 ↗
40. 10.1002/adma.20100297910.1002/adma.201002979 ↗
41. 10.1016/j.apsusc.2015.06.14910.1016/j.apsusc.2015.06.149 ↗
42. 10.1016/j.matlet.2014.10.04910.1016/j.matlet.2014.10.049 ↗
43. Shen H. · 2012 · 841743
44. 10.1021/jacs.5b0131410.1021/jacs.5b01314 ↗
45. 10.1063/1.491430410.1063/1.4914304 ↗
46. 10.1002/anie.20161155910.1002/anie.201611559 ↗
47. 10.1039/C6CC05090E10.1039/C6CC05090E ↗
48. 10.1021/jp103617m10.1021/jp103617m ↗
49. Han J. · J. Chin. Ceram. Soc. · 2010 · 29 · 681
50. 10.1364/OE.23.02368010.1364/OE.23.023680 ↗
51. 10.1038/lsa.2017.16810.1038/lsa.2017.168 ↗
52. 10.1109/JSTQE.2017.264946610.1109/JSTQE.2017.2649466 ↗