| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-디스플레이 |
| 제목 |
Effect of vanadium pentoxide mixed PEDOT:PSS for quantum-dot light-emitting diodes |
| 초록 |
We demonstrated improved hole injection properties using PEDOT:PSS mixed with inorganic vanadium pentoxide (V2O5) for high performance quantum-dot light-emitting diodes (QLEDs). Devices were fabricated from each mixing ratio and annealing temperature to form a film for smooth charge injection. Effective hole injection characteristic of V2O5 mixed PEDOT:PSS hole injection layer (HIL) was observed at the hole-only-devices (HODs). The leakage current of the fabricated QLEDs was reduced. As a result, much improved efficiency was obtained in QLED devices using V2O5 (10:1 V/V) mixed PEDOT:PSS annealed at 150℃. The maximum current efficiency was 13.9 cd/A and the EQE was 3.1%, both of which increased by more than 600% compared to the control device. More importantly, the lifetime of the devices was increased due to the mixing of V2O5. These results demonstrate that transition metal oxide mixed PEDOT:PSS is an alternative to simple organic HIL for high efficiency and stable QLEDs. |
| 저자 |
신재승, 김태연, 허수빈, 강성준
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| 소속 |
경희대 |
| 키워드 |
Hole injection layer; Mixed PEDOT:PSS; Stable; Quantum-dot light-emitting diodes
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| E-Mail |
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