| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
대학원생 구두발표(발표15분) |
| 제목 |
Ligand-Asymmetric Janus Quantum Dot-Charge Transport Layer Pairs for Efficient Blue-Quantum Dot Light-Emitting Diodes |
| 초록 |
We demonstrate ligand-asymmetric Janus quantum dots (QDs) to enhance the device performance of quantum dot light-emitting diodes (QLEDs). Each side of ligands acts different roles in controlling the charge injection rates on this platform. In specific, bottom ligands directly change the electronic energy levels of ZnO electron transport layer and top ligands allow systematic engineering of hole transport layers that change the electric field across the device. As a synergistic effect of suppressed electron injection rate and stimulated the hole injection rate, blue QLED with engineered ligand-CTL pairs shows substantial enhancement in the device efficiency compared with the reference QLED. The present study validates the importance of charge balance in QLED efficiency and also offers an effective platform that highlights on influence of ligands on CTLs for enhancement of charge injection balance and thereby the device efficiency. |
| 저자 |
조익준1, 배완기2, 조진한1
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| 소속 |
1고려대, 2성균관대 |
| 키워드 |
ligand-asymmetric quantum dot; quantum dot based light-emitting diode; interface engineering; hole transport layer engineering; charge balance
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| E-Mail |
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