| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 봄 (04/27 ~ 04/29, 부산 BEXCO) |
| 권호 |
22권 1호, p.975 |
| 발표분야 |
재료 |
| 제목 |
Measurement of Quantum dots light-emitting devices stability with spectroscopic analysis |
| 초록 |
We have investigated quantum dots light emitting diodes (QD-LEDs) stability with Time-Correlated Single Photon Counting System (TCSPC). We have synthesized inverted QD-LEDs with CdSe/Zn1-XCdXS core/shell Type-1 heterostructured QDs (Core radius: 2nm, Shell thickness: 6nm, total diameter: 16nm) but with different organic hole transport layer (HTL). While operating device we measured QDs lifetime with TCSPC. QDs degradation occurred in very early time of device operation and it affect little in device efficiency. QDs are stable but as time goes by device brightness decreases. With different HTL, QD-LEDs have shown different lifetime. Spectroscopic analysis reveals that degradation in QD-LEDs is resulted from QDs charging and HTL degradation. More stable device could be realized with different HTL. |
| 저자 |
장준혁1, 정희영1, 배완기2, 이창희1, 차국헌1
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| 소속 |
1서울대, 2한국과학기술(연) |
| 키워드 |
화공나노소재; Optics; Wet process
|
| E-Mail |
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| 원문파일 |
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