| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Design of Deep Blue Thermally Activated Delayed Fluorescence Materials |
| 초록 |
Organic light-emitting diodes (OLEDs) using thermally activated delayed fluorescence (TADF) has been attracted many researchers since they can utilize both singlet and triplet excitons, thus theoretically can reach 100% internal quantum efficiency. Developing blue emitting TADF material is still challenging since they often suffer from low stability and broad emission spectrum. Here we report rationally designed TADF emitters with donor-acceptor configurations. Density functional theory (DFT) based calculations reveals spatially well separated highest occupied and lowest unoccupied molecular orbitals, resulting in small singlet-triplet splitting of ~10 meV. Spectroscopic measurements confirm their room-temperature TADF behavior with emission maximum ranging from 464-471 nm. Simple and rigid molecular structure further gives their chemical/electrochemical stability. |
| 저자 |
김희재, PREM PRABHAKARAN, 황동렬
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| 소속 |
한남대 |
| 키워드 |
TADF; blue emitters; donor-acceptor configurations
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| E-Mail |
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