A Solution-Processable Small-Molecule Host for Phosphorescent Organic Light-Emitting Devices

被引：0

作者：

Chiba, Takayuki ^{[1
]}

Fukada, Arata ^{[1
]}

Igarashi, Masahiro ^{[1
]}

Hikichi, Tatsuya ^{[1
]}

Ohisa, Satoru ^{[1
]}

Pu, Yong-Jin ^{[1
]}

Kido, Junji ^{[1
]}

机构：

[1] Yamagata Univ, Grad Sch Organ Mat Sci, 4-3-16 Jonan, Yonezawa, Yamagata 9928510, Japan

来源：

JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY | 2016年 / 29卷 / 02期

关键词：

organic light-emitting device; phosphorescent; solution-processed; ELECTRON INJECTION; HIGH-EFFICIENCY; POLYMER; DIODES; LAYERS; EMISSION; UNITS;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The phosphorescent organic light-emitting devices (OLEDs) consisting of the solution-processed four organic layers: hole injection layer, electron blocking layer, emissive layer, and electron injection layer were fabricated. The small-molecule host material used in the device, 3,3',6,6'-tetrakis(9-phenyl-9H-carbazol-3-yl)benzophenone (TCzBP), is insoluble in alcohol solvents such as methanol, ethanol, and 2-propanol. Therefore, alcohol soluble electron injection materials can be coated onto small-molecule TCzBP based-phosphorescent emissive layer from alcohol solution. Power efficiency of 22 lm/W and external quantum efficiency of 14.6% were achieved at 1000 cd/m(2) with spin-coated cesium carbonate (Cs2CO3) as an electron injection layer.

引用

页码：317 / 321

页数：5

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