| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Synthesis of Highly Twisted Pyrene Derivative for Pure Blue OLED |
| 초록 |
We synthesized new fluorescent blue host material, BD4PP for pure-blue OLEDs. BD4PP has highly twisted and steric design for efficient fluorescence, and showes high thermal property of 492 oC. BD4PP host doped with 5 wt. % 4,40-bis(9-ethyl-3-carbazovinylene)-1,10-biphenyl (BCzVBi) or 5 wt. % 1,4-bis[2-(3-N ethylcarbazoryl)- vinyl]benzene (BCzVB) showed high device efficiencies based on wide bandgap (~3.1 eV) and electron-rich host. An OLED with the BD4PP:BCzVB emitter presented higher current and external quantum efficiencies (EQEs) of 4.41 cd/A and 3.80% with color coordinates (0.16, 0.13) compared to those of the BD4PP:BCzVBi (3.63 cd/A and 3.62%) with color coordinates (0.16, 0.11) and non-doped BD4PP (2.01 cd/A and 1.61%) with color coordinates (0.18, 0.13). In other words, BD4PP molecule inhibited the intermolecular interaction, resulting in color purity and high efficiency by introducing xylene units into the structure. |
| 저자 |
박지현1, 김윤희1, 정성준2, 손선영2, Xinwei Wu1, 박광훈1, 안형주3, 권순기1
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| 소속 |
1경상대, 2포항공대, 3포항가속기(연) |
| 키워드 |
Blue fluorescence; Pyrene; Color purity
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| E-Mail |
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