| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
An exciplex host consisted of high triplet level materials for deep-blue phosphorescent organic light-emitting diodes |
| 초록 |
The use of exciplex hosts is attractive for high-performance phosphorescent organic light-emitting diodes (PhOLEDs) and thermally activated delayed fluorescence OLEDs, which have high external quantum efficiency, low driving voltage, and low efficiency roll-off. However, exciplex hosts for deep-blue OLEDs have not yet been reported because of the difficulties in identifying suitable molecules. Here, we report a deep-blue-emitting exciplex system with an exciplex energy of 3.0 eV. It is composed of a carbazole-based hole-transporting material (mCP) and a phosphine-oxide-based electron-transporting material (BM-A10). The blue PhOLEDs exhibited maximum external quantum efficiency of 24 % with CIE color coordinates of (0.15, 0.21), and longer lifetime than the single host devices. |
| 저자 |
임형철, 김장주, 신현, 김권현, 유승준, 허진석
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| 소속 |
서울대 |
| 키워드 |
deep blue exciplex; exciplex host; blue phosphorescent OLED; high triplet level
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| E-Mail |
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