三苯胺
有机发光二极管
电致发光
光化学
激子
特里斯
准分子
硼烷
材料科学
发光
荧光
光电子学
化学
分析化学(期刊)
图层(电子)
催化作用
纳米技术
光学
有机化学
物理
生物化学
量子力学
作者
Qi Huang,Suling Zhao,Zheng Xu,Xing Fan,Chongyu Shen,Qianqian Yang
摘要
Highly efficient fluorescence organic light-emitting diodes (OLEDs) based on the mixed 4,4′,4″-tris[3-methylphenyl(phenyl)amino]triphenylamine:tris-[3-(3-pyridyl)mesityl]borane (1:1) system are reported. The electroluminescence due to the exciplex emission is red shifted when the thickness of the electron-transporting layer increases. The prepared OLEDs achieve a low turn-on voltage of 2.1 V, a high current efficiency of 36.79 cd/A, and a very high luminescence of 17 100 cd/m2, as well as a low efficiency roll-off. The current efficiency of the optimized OLED is maintained at more than 28.33 cd/A up to 10 000 cd m−2. The detailed recombination mechanism of the prepared OLEDs is investigated by the transient electroluminescence method. It is concluded that there are no contributions from trapped charges and annihilations of triplet-triplet excitons to the detected electroluminescence.
科研通智能强力驱动
Strongly Powered by AbleSci AI