Improving the performance of organic thin-film transistor with a doped interlayer

被引：11

作者：

Hu, Wei ^{[1
]}

Zhao, Yi ^{[1
]}

Ma, Chunsheng ^{[1
]}

Hou, Jingying ^{[1
]}

Liu, Shiyong ^{[1
]}

机构：

[1] Jilin Univ, Natl Lab Integrated Optoelect, Changchun 130012, Peoples R China

来源：

MICROELECTRONICS JOURNAL | 2007年 / 38卷 / 4-5期

基金：

中国国家自然科学基金;

关键词：

organic thin-film transistor; OTFT; pentacene;

D O I：

10.1016/j.mejo.2007.03.014

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：

Top contact organic thin-film transistors (TC OTFTs) based on pentacene are fabricated. For improving the contact characteristics between the organic semiconductor thin-film and gold electrodes, we doped the starburst molecular 4,4',4"-tris{N,(3-methylpheny)-N-phenylamitio}-triphenylamine) (m-MTDATA), which is an excellent hole injection material for the organic light-emitting devices (OLEDs), into the interlayer contact with the electrodes. Compared with conventional TC OTFT, the performances of the organic transistor with the doped interlayer are improved. The field-effect mobility increases from 0.16 to 0.51 cm(2)/V s, and threshold voltage downshifts from -11 to -2.8 V for the linear region. The on/off current ratio is more than 104 when the gate voltage varies from 0 to -20V. We ascribe the improvements to the doped interlayer for which the contact resistance is reduced and the hole injection is enhanced. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：509 / 512

页数：4