Synthesis of Diimidazolylstilbenes as n-Type Blue Fluorophores: Alternative Dopant Materials for Highly Efficient Electroluminescent Devices
作者:Ho-Hsiu Chou、Yi-Hsiang Chen、He-Pei Hsu、Wen-Hsin Chang、Yu-Han Chen、Chien-Hong Cheng
DOI:10.1002/adma.201202222
日期:2012.11.14
Two new n‐type diimidazolylstilbenes as blue‐fluorescent dopant materials are synthesized and characterized. Blue‐fluorescent devices based on these two compounds as the dopants reveal outstanding external quantum efficiencies (EQEs) (current efficiencies) of 7.8% (10.4 cd A−1) and 7.7% (7.9 cd A−1) with Commission internationale de l'Eclairage (CIE) co‐ordinates of (0.14, 0.15) and (0.15, 0.11).
合成并表征了两种新的n型二咪唑基对苯二酚作为蓝色荧光掺杂剂材料。基于这两种化合物作为掺杂剂的蓝色荧光器件显示出出色的外部量子效率(EQE)(电流效率),达到国际委员会的7.8%(10.4 cd A -1)和7.7%(7.9 cd A -1)。闪耀(CIE)坐标为(0.14,0.15)和(0.15,0.11)。