Bibliographic Details
| Title: |
Solution-processed quantum-dot light-emitting diodes combining ultrahigh operational stability, shelf stability, and luminance |
| Authors: |
Zi Ye, Mengyu Chen, Xingtong Chen, Wenchen Ma, Xiaojuan Sun, Longjia Wu, Xiongfeng Lin, Yu Chen, Song Chen |
| Source: |
npj Flexible Electronics, Vol 6, Iss 1, Pp 1-7 (2022) |
| Publisher Information: |
Nature Portfolio, 2022. |
| Publication Year: |
2022 |
| Collection: |
LCC:Electronics
LCC:Materials of engineering and construction. Mechanics of materials |
| Subject Terms: |
Electronics, TK7800-8360, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| More Details: |
Abstract The shelf-stability issue, originating from the ZnO-induced positive aging effect, poses a significant challenge to industrializing the display technology based on solution-processed quantum-dot light-emitting diodes (QLEDs). Currently, none of the proposed solutions can simultaneously inhibit exciton quenching caused by the ZnO-based electron-transporting layer (ETL) and retain other advantages of ZnO. Here in this work, we propose a bilayer design of ETL in which a buffer layer assembled of SnO2 nanoparticles (NPs) suppresses the QD-ETL exciton quenching and tunes charge balance while ZnO NPs provide high electron conductivity. As a result, the bottom-emitting QLED combining capped ZnO and SnO2 buffer exhibit a maximum luminance over 100,000 cd m−2 and a T 95 operational lifetime averaging 6200 h at 1000 cd m−2 on the premise of entirely inhibiting positive aging. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2397-4621 |
| Relation: |
https://doaj.org/toc/2397-4621 |
| DOI: |
10.1038/s41528-022-00231-2 |
| Access URL: |
https://doaj.org/article/d2fbd301a28e41a397d1d5ef92f8ccc0 |
| Accession Number: |
edsdoj.2fbd301a28e41a397d1d5ef92f8ccc0 |
| Database: |
Directory of Open Access Journals |
