A bipolar emitting material for high efficient non-doped fluorescent organic light-emitting diode approaching standard deep blue
作者:Shigen Fan、Jing You、Yanqin Miao、Hua Wang、Qingyun Bai、Xicheng Liu、Xianggao Li、Shirong Wang
DOI:10.1016/j.dyepig.2016.02.006
日期:2016.6
devices. The non-doped fluorescent organic light-emitting diode with the emitting compound as emitting layer exhibits emission peak at 420 nm and full width at half maximum of 54 nm, maximum current efficiency of 2.30 cd/A, and maximum power efficiency of 1.52 lm/W, which are higher than most reported deep blue emitters with a y coordinate ≤0.064. The chromaticity coordinate is stable at (0.166, 0.064) with
深蓝色发射化合物9-(4'-(1,4,5-三苯基-1 H-咪唑-2-基)-[1,1'-联苯] -4-基)-9 H设计并合成了咔唑。发光化合物具有咔唑作为电子给体,咪唑作为电子受体的给体-π受体结构。发射化合物在溶液中显示出高量子产率(0.87)和良好的热稳定性。发射化合物具有单载流子器件确定的双极传输特性。具有发光化合物作为发光层的非掺杂荧光有机发光二极管在420 nm处具有发射峰,半峰全宽为54 nm,最大电流效率为2.30 cd / A,最大功率效率为1.52 lm / W,高于大多数报道的深蓝色发射器,y坐标≤0.064。随着工作电压的增加,色度坐标稳定在(0.166,0.064)。