| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Analysis method for efficiency roll-off and its applications to single host, mixed host, and exciplex forming co-host system |
| 초록 |
A modified model has been established to account the effects of the contributions of quenching processes and charge carrier imbalance on efficiency roll-off including the exciton profile, effective radiative quantum efficiency and out-coupling efficiency as a function of location of excitons in emitting layer (EML). By combining electrical and optical excitation in time-resolved spectroscopic experiments, the contributions of quenching and charge carrier imbalance to efficiency roll-off are experimentally analysed. In addition, the exciton profiles and the width of recombination zone in EML are identified by a sensing layer method. The analysis method are applied to three different phosphorescent organic lighting emitting diodes (PhOLEDs) systems using a single host, non-exciplex forming mixed host, and an exciplex forming co-host. |
| 저자 |
심봄이, 문창기, 김권현, 김장주
|
| 소속 |
서울대 |
| 키워드 |
roll-off; charge balance; quenching; exciton profile
|
| E-Mail |
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