Highly efficient orange phosphorescent organic light-emitting diodes based on an iridium(III) complex with diethyldithiocarbamate (S∧S) as the ancillary ligand
Highly efficient orange phosphorescent organic light-emitting diodes based on an iridium(III) complex with diethyldithiocarbamate (S∧S) as the ancillary ligand
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DOI：
10.1039/c6ra12529h
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发表时间：
2016-01-01
期刊：
影响因子：
3.9
通讯作者：
Ye, Shanghui
中科院分区：
文献类型：
--
作者：
Mei, Qunbo;Chen, Chen;Ye, Shanghui
合成了一种新型铱（III）配合物Ir(dpp) 2(dta) （dppH = 4,6-二苯基嘧啶；dta =二乙基二硫代氨基甲酸酯）并对其进行了表征。在掺杂浓度为1%的聚甲基丙烯酸甲酯（PMMA）薄膜中，该配合物在575 nm处显示出强发射，光致发光量子产率高达86%。以Ir(dpp)(2)（dta）为三态发射体，以不同浓度（x = 1%、3%、5%、7%和10%）掺杂在70%聚（n -乙烯基咔唑）(PVK) + 30% 2,2′-（1,3-苯基）二[5-（4-叔丁基苯基）-1,3,4-恶二唑]（OXD-7）聚合物基体中，制备了具有高亮度和高效率的橙黄色聚合物发光器件。该装置达到了理想的导通电压(
A novel iridium(III) complex Ir(dpp) 2(dta) (dppH = 4,6-diphenyl pyrimidine; dta = diethyldithiocarbamate) was synthesized and characterized. The complex displayed strong emissions at 575 nm with high photoluminescence quantum yields of 86% in the doped poly(methyl methacrylate) (PMMA) film at 1% doping concentration. The orange-yellow polymer light-emitting devices (PLEDs) based on Ir(dpp)(2)(dta) as a triplet emitter with different concentrations (x = 1%, 3%, 5%, 7% and 10%) doped in a polymeric host 70% poly(N-vinylcarbazole) (PVK) + 30% 2,2'-(1,3-phenylene) bis[5-(4-tert-butylphenyl)-1,3,4-oxadiazole] (OXD-7) were fabricated with high luminance and efficiency. The device achieved an ideal turn-on voltage (