| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
[디스플레이] 차세대 고성능 전자재료 및 소자 |
| 제목 |
Unveiling the root cause of the efficiency-lifetime trade-off in blue fluorescent OLEDs |
| 초록 |
The origin of efficiency-lifetime trade-off in triplet–triplet fusion (TTF) type blue fluorescent organic light-emitting diodes (OLEDs) was investigated. It was found that electron leakage from EML and high spatial density of excitons in the vicinity of the electron blocking layer for high TTF rates by narrow recombination zone are the decisive factors for efficiency-lifetime trade-off. We further investigated the degradation mechanism of blue fluorescent OLEDs with respect to the types of host and EBL materials. It was also revealed that the bond dissociation energy plays a critical role in the device degradation. |
| 저자 |
김태경, 황교민
|
| 소속 |
홍익대 |
| 키워드 |
blue OLED; TTF; efficiency-lifetime
|
| E-Mail |
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