Low-temperature annealing to enhance efficiency in organic small-molecule solution-processable OLEDs

被引：1

作者：

Xue, Shanfeng ^{[1
]}

Fei, Teng ^{[1
]}

Yao, Liang ^{[1
]}

Shen, Fangzhong ^{[1
]}

Zhang, Ming ^{[1
]}

Liu, Xiaodong ^{[1
]}

Ma, Yuguang ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 2011年 / 26卷 / 05期

关键词：

LIGHT-EMITTING-DIODES; DEVICES; DERIVATIVES; EMISSION; FILMS;

D O I：

10.1088/0268-1242/26/5/055016

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Single-layer solution-processable organic light-emitting diodes (OLEDs) based on a green emissive molecule of 4,7-bis(9,9-bis(6-9H-carbazol-9-yl)hexyl)-9H-fluoren-2-yl)benzo[c][1,2,5]thiadiazole (TCBzC) are fabricated. The luminous efficiency reaches 6.9 cd A(-1) after annealing at low temperature of 40 degrees C, which is double that of the un-annealing device, and this performance is among the highest efficiency of single-layer solution-processable OLEDs reported so far. This enhancement may be due to rearrangement of the peripheral alkyl-linked carbazole units in TCBzC after annealing, which helps the hole and electron transport to be more balanced.

引用

页数：5

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