Modified Zinc Magnesium Oxide for Optimal Charge‐Injection Balance in InP Quantum Dot Light‐Emitting Diodes
Source abstract
Abstract
Abstract Balanced charge injection into the emissive layer is a prerequisite for achieving highly efficient quantum dot light‐emitting diodes (QLEDs). The similar energy distribution of charge transport layers and indium phosphide (InP) quantum dots (QDs) facilitates excess electron injection to the InP QD layer. In this study, magnesium‐doped ZnO nanoparticles (ZMO NPs) are modified to suppress the electron injection to the InP QD layer. Particularly, hydroxyl groups are effectively replaced by electrically stable states through the passivation of ZMO NPs, retarding electron injection through the ZMO NP layer. The modified ZMO‐NP‐based InP QLEDs exhibit a maximum external quantum efficiency of 9.6% with a substantially enhanced operational lifetime compared with that of devices made with unmodified ZMO NPs.
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Research context
OpenAlex topics: Quantum Dots Synthesis And Properties · ZnO doping and properties · Electronic and Structural Properties of Oxides
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electronic Engineering Kwangwoon University Seoul 01897 Republic of Korea
SKKU Advanced Institute of Nano Technology and Department of Nano Engineering Sungkyunkwan University Suwon 16419 Republic of Korea
Department of Electrical and Computer Engineering Inter‐University Semiconductor Research Center Seoul National University Seoul 08826 Republic of Korea
References (52)
Show source-provided references
1. 10.1038/370354a010.1038/370354a0 ↗
2. 10.1126/science.271.5251.93310.1126/science.271.5251.933 ↗
3. 10.1038/nature0121710.1038/nature01217 ↗
4. 10.1021/nl300325410.1021/nl3003254 ↗
5. 10.1038/nmat501110.1038/nmat5011 ↗
6. 10.1002/adma.20210627610.1002/adma.202106276 ↗
7. 10.1038/nature1382910.1038/nature13829 ↗
8. 10.1021/nn403594j10.1021/nn403594j ↗
9. 10.1038/s41586-019-1771-510.1038/s41586-019-1771-5 ↗
10. 10.1021/ja00072a02510.1021/ja00072a025 ↗
11. 10.1021/acs.chemmater.8b0367110.1021/acs.chemmater.8b03671 ↗
12. 10.1021/cm070754d10.1021/cm070754d ↗
13. 10.1021/cm801201x10.1021/cm801201x ↗
14. 10.1364/OE.23.02368010.1364/OE.23.023680 ↗
15. 10.1038/nphoton.2011.1210.1038/nphoton.2011.12 ↗
16. 10.1002/adom.20200212910.1002/adom.202002129 ↗
17. 10.1007/s12274-021-3352-910.1007/s12274-021-3352-9 ↗
18. 10.1038/s41467-020-15481-910.1038/s41467-020-15481-9 ↗
19. 10.1021/acsnano.8b0338610.1021/acsnano.8b03386 ↗
20. 10.1002/adom.20220031910.1002/adom.202200319 ↗
21. 10.1021/acsami.1c0189810.1021/acsami.1c01898 ↗
22. 10.1038/383802a010.1038/383802a0 ↗
23. 10.1021/acs.chemrev.6b0016910.1021/acs.chemrev.6b00169 ↗
24. 10.1021/nn400282510.1021/nn4002825 ↗
25. 10.1002/adma.20140362010.1002/adma.201403620 ↗
26. 10.1038/ncomms366110.1038/ncomms3661 ↗
27. 10.1021/nn502347310.1021/nn5023473 ↗
28. 10.1021/nl403289w10.1021/nl403289w ↗
29. 10.1021/acsami.1c2008810.1021/acsami.1c20088 ↗
30. 10.1002/admi.20210073110.1002/admi.202100731 ↗
31. 10.1016/j.orgel.2021.10616910.1016/j.orgel.2021.106169 ↗
32. 10.1021/acsami.2c0436910.1021/acsami.2c04369 ↗
33. 10.1126/science.aal203810.1126/science.aal2038 ↗
34. 10.1002/adfm.20210638710.1002/adfm.202106387 ↗
35. 10.1002/qute.20170000610.1002/qute.201700006 ↗
36. 10.1021/acsphotonics.5b0026710.1021/acsphotonics.5b00267 ↗
37. 10.1002/adfm.20200530310.1002/adfm.202005303 ↗
38. 10.1002/adfm.20200293210.1002/adfm.202002932 ↗
39. 10.1021/acs.nanolett.8b0345710.1021/acs.nanolett.8b03457 ↗
40. 10.1016/j.orgel.2020.10565610.1016/j.orgel.2020.105656 ↗
41. 10.1039/C8TC03014F10.1039/C8TC03014F ↗
42. 10.1021/acsami.6b1031410.1021/acsami.6b10314 ↗
43. 10.1038/s41467-020-16652-410.1038/s41467-020-16652-4 ↗
44. 10.1039/D2MA00098A10.1039/D2MA00098A ↗
45. 10.1016/j.materresbull.2017.05.04310.1016/j.materresbull.2017.05.043 ↗
46. 10.1016/j.materresbull.2006.11.03510.1016/j.materresbull.2006.11.035 ↗
47. 10.1021/acsami.8b0472110.1021/acsami.8b04721 ↗
48. 10.1063/1.512367010.1063/1.5123670 ↗
49. 10.1063/1.172881810.1063/1.1728818 ↗
50. 10.1038/s41467-020-17633-310.1038/s41467-020-17633-3 ↗
51. 10.1016/0038-1098(69)90470-010.1016/0038-1098(69)90470-0 ↗
52. 10.1063/1.33647210.1063/1.336472 ↗