Solvent-dependent electrical characteristics and stability of organic thin-film transistors with drop cast bis(triisopropylsilylethynyl) pentacene

被引：106

作者：

Kim, Chang Su ^{[1
]}

Lee, Stephanie ^{[1
]}

Gomez, Enrique D. ^{[1
]}

Anthony, John E. ^{[2
]}

Loo, Yueh-Lin ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA

[2] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 10期

关键词：

D O I：

10.1063/1.2979691

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The solvent from which the active layer is drop cast dramatically influences the electrical characteristics and electrical stability of thin-film transistors comprising bis (triisopropylsilylethynyl) pentacene. Casting from high boiling solvents allows slower crystallization; devices cast from toluene and chlorobenzene thus exhibit mobilities >0.1 cm2/V s and on/off ratios of similar to 10(6). More importantly, the solvent choice influences the device stability. Devices from toluene exhibit stable characteristics, whereas devices from chlorobenzene show hystereses on cycling, with dramatic threshold voltage shifts toward positive voltages. The instability in chlorobenzene devices is attributed to the migration of water and solvent impurities to the charge transport interface on repetitive testing. (c) 2008 American Institute of Physics.

引用

页数：3

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