Highly efficient electroluminescence devices with a mixed layer of SnO2 and colloidal quantum dots
- Authors
- Yoon, Changgi; Moon, Aram; Yang, Heesun; Kim, Jiwan
- Issue Date
- 1-Jan-2022
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Quantum dots; electron transport layer; nanoparticles; SnO2; QLEDs
- Citation
- JOURNAL OF INFORMATION DISPLAY, v.23, no.3, pp.193 - 199
- Journal Title
- JOURNAL OF INFORMATION DISPLAY
- Volume
- 23
- Number
- 3
- Start Page
- 193
- End Page
- 199
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/27565
- DOI
- 10.1080/15980316.2022.2039790
- ISSN
- 1598-0316
- Abstract
- We demonstrate the high efficiency of quantum dot light-emitting diodes (QLEDs) that consist of a mixed layer of SnO2 nanoparticles (NPs) and quantum dots (QDs). A stable mixture of SnO2 NPs and QDs is prepared in chlorobenzene and then applied to QLEDs with no separate electron transport layer (ETL). QLEDs with such a simplified structure produce a maximum luminance of 142,855 cd/m(2), an EQE of 9.42%, and a current efficiency of 41.18 cd/A that result from the improved charge balance of the mixed layer. This produces one of the best device performances of QLEDs with a non-ZnO inorganic ETL, clearly indicating the remarkable promise of using SnO2 NPs as an inorganic ETL for QLEDs. Moreover, the reduction of fabrication steps in this solution-based process proves advantageous to next-generation display technology.
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Collections - Graduate School > Materials Science and Engineering > 1. Journal Articles
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