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.
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页数：5
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