有机发光二极管
咪唑
荧光
芘
胺气处理
深蓝色
热稳定性
光化学
接受者
热分解
材料科学
量子效率
光电子学
化学
图层(电子)
有机化学
光学
纳米技术
物理
凝聚态物理
作者
Khurram Usman,Amjad Islam,Syed Hamad Ullah Shah,Kashif Javaid,Al Amin,Zeeshan Mustafa,Abdul Ghafar Wattoo,Nadeem Abbas,Ziyi Ge
标识
DOI:10.1016/j.optmat.2021.111582
摘要
Numerous endeavors have been exerted to devise deep-blue light-emitting materials (LEMs) for organic light-emitting devices (OLEDs). Nevertheless, deep-blue light-emitting materials exhibiting high efficiency for simple-structured OLEDs are still scarce. Herein, a donor-acceptor based LEM, 4'-(4, 5-diphenyl-1-(3-(pyren-1-yl)phenyl)-1H-imidazole-2-yl)-N,N-diphenylbiphenyl-4-amine (TPA-PyI) is developed by merging imidazole, triphenyl-amine and pyrene units for OLEDs. TPA-PyI is used as the emitting layer in OLED device, which emits a deep-blue fluorescence at 444 nm. With a current efficiency (CE) of 3.05 cd/A and a power efficiency (PE) of 2.95 lm/W, an EQE of 2.97% is achieved. High thermal-stability is achieved with decomposition-temperature (Td) of 516 °C.
科研通智能强力驱动
Strongly Powered by AbleSci AI