Effects of hydroxyl groups in polymeric dielectrics on organic transistor performance

被引：296

作者：

Lee, S

Koo, B

Shin, J

Lee, E

Park, H

Kim, H ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea

[2] Samsung Adv Inst Technol, Display Lab, Suwon 440600, South Korea

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 16期

关键词：

D O I：

10.1063/1.2196475

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Polymeric dielectrics having different ratios of hydroxyl groups were intentionally synthesized to investigate the effect of hydroxyl groups on the electrical properties of pentacene-based organic thin film transistors (OTFTs). Large hysteresis usually observed in OTFT devices was confirmed to be strongly related to the hydroxyl bonds existing inside of polymeric dielectrics and could be reduced by substituting with cinnamoyl groups. Although the hydroxyl groups deteriorate the capacitance-voltage characteristics and gate leakage current densities, exceptionally high hole mobility (5.5 cm(2) V-1 s(-1)) could be obtained by increasing the number of hydroxyl groups, which was not caused by the improvement of pentacene crystallinity but related to the interface characteristics. (c) 2006 American Institute of Physics.

引用

页数：3

共 13 条

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