具有混合聚合物主体和宽发射光谱的磷光分子掺杂发光二极管。

Phosphorescent molecularly doped light-emitting diodes with blended polymer host and wide emission spectra.

作者信息

Wang Jun, Gou Jun, Li Weizhi

机构信息

State Key Lab of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, China.

出版信息

ScientificWorldJournal. 2013 Nov 13;2013:954146. doi: 10.1155/2013/954146. eCollection 2013.

DOI:10.1155/2013/954146

PMID:24324387

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3845330/

Abstract

Stable green light emission and high efficiency organic devices with three polymer layers were fabricated using bis[2-(4'-tert-butylphenyl)-1-phenyl-1H-benzoimidazole-N,C²'] iridium(III) (acetylacetonate) doped in blended host materials. The 1 wt% doping concentration showed maximum luminance of 7841 cd/cm² at 25.6 V and maximum current efficiency of 9.95 cd/A at 17.2 V. The electroluminescence spectra of devices indicated two main peaks at 522 nm and 554 nm coming from phosphor dye and a full width at half maximum (FWHM) of 116 nm. The characteristics of using blended host, doping iridium complex, emission spectrum, and power efficiency of organic devices were investigated.

摘要

通过将双[2-(4'-叔丁基苯基)-1-苯基-1H-苯并咪唑-N,C²']铱(III)(乙酰丙酮化物)掺杂在混合主体材料中，制备了具有三层聚合物层的稳定绿光发射和高效有机器件。1 wt%的掺杂浓度在25.6 V时显示出最大亮度为7841 cd/cm²，在17.2 V时显示出最大电流效率为9.95 cd/A。器件的电致发光光谱表明，在522 nm和554 nm处有两个主要峰，来自磷光染料，半高宽(FWHM)为116 nm。研究了使用混合主体、掺杂铱配合物、发射光谱和有机器件功率效率的特性。