Bright red light-emitting devices based on a novel europium complex doped into polyvinylcarbazole
作者:Yong Zhang、Chun Li、Huahong Shi、Bin Du、Wei Yang、Yong Cao
DOI:10.1039/b617612g
日期:——
The complex (1,10-phenanthroline)tris[4,4,4-trifluoro-1-(9,9-dihexylfluoren-2-yl)-1,3-butanedione] europium(III), Eu(FTA)3Phen, was synthesized. Devices based on the complex doped into a PVK:PBD host as emitter were fabricated and showed good performance. A double-layer device with a device configuration of ITO/PEDOT:PSS (150 nm)/PVK:PBD:Eu(FTA)3Phen (80 nm)/Ba (4 nm)/Al (200 nm) with 0.2 wt% Eu(FTA)3Phen
络合物(1,10-菲咯啉)三[4,4,4-三氟-1-(9,9-二己基芴-2-基)-1,3-丁二酮] euro(III),Eu(FTA)3苯,已合成。制造了基于复合物的器件,该复合物被掺杂到PVK:PBD主机中作为发射器,并显示出良好的性能。具有0.2 wt%的ITO / PEDOT:PSS(150 nm)/ PVK:PBD:Eu(FTA)3 Phen(80 nm)/ Ba(4 nm)/ Al(200 nm)器件配置的双层器件Eu(FTA)3 Phen掺杂浓度由于在612 nm处的III(III)离子而发出了强烈的红色发射。该器件在12.3 V时显示出最高亮度114 cd m -2,最大外部量子效率为0.41%,最大亮度效率为0.44 cd A -1在7.5 V下工作。此外,在插入TPBI层后,器件性能大大提高。在1%w / w Eu(FTA)3 Phen掺杂浓度下,在16.7 V下的最高亮度为465