학회 | 한국공업화학회 |
학술대회 | 2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
권호 | 24권 1호 |
발표분야 | 포스터-디스플레이 |
제목 | High efficiency chrysene deep-blue emitters in non-doped OLED devices |
초록 | Diphenylamine substituted with methyl groups was used as a side group to realize high efficiency chrysene deep blue emitters. Three chrysene derivatives substituted with side groups were successfully synthesized: tetra-otolylchrysene-6,12-diamine (o-DPAC), tetra-m-tolylchrysene-6,12-diamine (m-DPAC), and tetra-p-tolyl-chrysene-6,12-diamine (p-DPAC). The maximum PL (Photoluminescence) emission wavelengths of the three materials in solution and in a film were shortest for o-DPAC and longest for p-DPAC. The highly twisted structure of o-DPAC showed the narrowest FWHM (47 nm) in the deep blue region with a PLmax of 449 nm in the film state. The three synthesized materials showed excellent thermal stability with a high Td over 370 °C. EML was applied to a non-doped OLED device considering the band gap of synthesized materials. Among the synthesized materials, the m-DPAC device achieved excellent EL performance of CIE x, y (0.14, 0.09), 4.89 cd/A, 3.60 lm/W, and an EQE of 6.18%. |
저자 | 강석우, 박종욱 |
소속 | 경희대 |
키워드 | OLEDs |
jongpark@khu.ac.kr |