| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Evaluation of the Horizontal Emitting Dipole Orientation of TADFs to optimize the efficiency of TADF-OLEDs |
| 초록 |
Thermally activated delayed fluorescences (TADF) are attracting as a next-generation emitting materials with advantages such as 100% internal quantum efficiency and reduced material cost. TADFs are essential to increase the horizontal emitting dipole (HED) orientation in the host film for development of high-performance TADF-OLEDs. It has beem reported that high horizontally oriented emitters with respect to the substrate are preferred for OLED with the high external quantum efficiency (EQE) by reducing optical losses compared to high vertically oriented emitters. First of all, we introduced a measurement system that can accurately estimate the horizontal dipole ratio(HDR) of emitters. Using the measurement system, we evaluated the horizontal orientation of green and yellow TADFs doped 5wt% in the host film. Given the values, we finally evaluated the maximum achievable EQEs of TADF-OLEDs and gave guidances on how to optimize the efficiency of TADF-OLEDs. |
| 저자 |
신윤섭, 이정환, 안홍은, 백승현
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| 소속 |
인하대 |
| 키워드 |
horizontal emitting dipole; TADF
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| E-Mail |
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