high triplet energy as 2.99 eV. Green phosphorescent organic light-emitting diodes (PhOLEDs) using BTBF-DPA were fabricated which displayed outstanding electroluminescent performance with a low turn-on voltage of 2.4 V, the maximum current efficiency (CE) of 123.6 cd A−1, power efficiency (PE) of 136.6 lm W−1, and external quantum efficiency (EQE) of 34.1%. Red PhOLEDs with BTBF-DPA also demonstrated
在这项工作中,基于
二苯胺基的苯并[4,5]
噻吩并[3,2- b ]
苯并呋喃(BTBF)核,BTBF-DPA,被合成并系统地研究了一种新型的空穴传输材料(HTM)。BTBF-DPA显示出高的载流子迁移率,良好的热稳定性和高达3.99 eV的三重态能量。制备了使用BTBF-DPA的绿色
磷光有机发光二极管(PhOLED),该有机发光二极管具有出色的电致发光性能,具有2.4 V的低开启电压,123.6 cd A -1的最大电流效率(CE),功率效率(PE) )为136.6 lm W -1,外部量子效率(EQE)为34.1%。带有BTBF-DPA的红色PhOLED还显示出最大PE为40.1 lm W -1,EQE为24.9%,开启电压为2.3V。此外,蓝色荧光OLED在10000 cd m处表现出的最大PE为4.9 lm W -1,EQE为5.2%,小效率滚降为11.5%。−2。具有BTBF-DPA