Bright and monochromic red light-emitting electroluminescence devices based on a new multifunctional europium ternary complex
摘要:
一种新型铕(III)配合物(三(二苯甲酰甲烷基)(2-4′-三苯基氨基)咪唑并[4,5-f]1,10-菲啰啉)铕(III),Eu(DBM)3(TPIP)被合成出来。发光中心、空穴传输三苯胺和电子传输菲啰啉片段被整合到一个分子中。ITO/Eu(DBM)3(TPIP)(60 nm)/Mg0.9Ag0.1/Ag的单层器件表现出基于EuIII的纯红色发射,在13.5 V和280 mA cm-2时最大亮度为19 cd m-2,启动驱动电压为8 V。ITO/TPD(20 nm)/
Bright and monochromic red light-emitting electroluminescence devices based on a new multifunctional europium ternary complex
摘要:
一种新型铕(III)配合物(三(二苯甲酰甲烷基)(2-4′-三苯基氨基)咪唑并[4,5-f]1,10-菲啰啉)铕(III),Eu(DBM)3(TPIP)被合成出来。发光中心、空穴传输三苯胺和电子传输菲啰啉片段被整合到一个分子中。ITO/Eu(DBM)3(TPIP)(60 nm)/Mg0.9Ag0.1/Ag的单层器件表现出基于EuIII的纯红色发射,在13.5 V和280 mA cm-2时最大亮度为19 cd m-2,启动驱动电压为8 V。ITO/TPD(20 nm)/
Efficient yellow–green light-emitting cationic iridium complexes based on 1,10-phenanthroline derivatives containing oxadiazole-triphenylamine unit
作者:Huaijun Tang、Yanhu Li、Qiliang Chen、Bing Chen、Qiquan Qiao、Wei Yang、Hongbin Wu、Yong Cao
DOI:10.1016/j.dyepig.2013.07.029
日期:2014.1
Cationic iridium(III) complexes with 1,10-phenanthroline (phen) derivatives containing oxadiazole-triphenylamine, oxadiazole or triphenylamine unit used as neutral auxiliary ligands, with the formula of [Ir(ppy)(2)(op-phen)][PF6] (C1), [Ir(ppy)(2)(o-phen)][PF6] (C2), and [Ir(ppy)(2)(p-phen)][PE6] (C3) (ppy = 2-phenylpyridine) were synthesized, respectively. The complexes exhibit high thermal stability and were used as phosphorescent dopants in polymer light-emitting diodes (PLEDs) with the configuration of ITO/PEDOT: PSS/PVK (70): PBD (30): complex (x, wt.%)/TPBI/CsF/Al. The complexes C1, C2 and C3 exhibit high electroluminescent performances with the maximum luminance efficiencies of 30.6 cd/A, 28.4 cd/A and 26.3 cd/A, respectively. The Commission Internationale de L'Eclairage (CIE) color coordinates of all complexes are (0.41, 0.55) corresponding to the yellow-green region. The complex C1 containing bipolar unit of oxadiazole-triphenylamine exhibits higher efficiency due to its balance of hole and electron fluxes. (C) 2013 Elsevier Ltd. All rights reserved.
Bright and monochromic red light-emitting electroluminescence devices based on a new multifunctional europium ternary complex
A novel europium(III) complex, tris(dibenzoylmethanato)(2-4′-triphenylamino)imidazo[4,5-f]1,10-phenanthroline)euro-pium(III), Eu(DBM)3(TPIP), is synthesized. The light-emitting center, hole-transporting triphenylamine and electron-transporting phenanthroline fragments are integrated into one molecule. A single-layer device of ITO/Eu(DBM)3(TPIP)(60 nm)/Mg0.9Ag0.1/Ag exhibits EuIII-based pure red emission with a maximum brightness of 19 cd m−2 at 13.5 V and 280 mA cm−2, and an onset driving voltage of 8 V. A four-layer device of ITO/TPD (20 nm)/Eu(DBM)3(TPIP) (40 nm)/BCP (20 nm)/AlQ(40 nm)/Mg0.9Ag0.1/Ag gives a maximum EuIII-based pure red emitting luminance of 1305 cd m−2 at 16 V and 255 mA cm−2 with an onset driving voltage of 6 V; the maximum external quantum yield and luminous yield are estimated to be 0.85% and 1.44 lm W−1, respectively, at 7.5 V and 0.25 mA cm−2.
一种新型铕(III)配合物(三(二苯甲酰甲烷基)(2-4′-三苯基氨基)咪唑并[4,5-f]1,10-菲啰啉)铕(III),Eu(DBM)3(TPIP)被合成出来。发光中心、空穴传输三苯胺和电子传输菲啰啉片段被整合到一个分子中。ITO/Eu(DBM)3(TPIP)(60 nm)/Mg0.9Ag0.1/Ag的单层器件表现出基于EuIII的纯红色发射,在13.5 V和280 mA cm-2时最大亮度为19 cd m-2,启动驱动电压为8 V。ITO/TPD(20 nm)/