Solvent effects and multiple aggregate states in high-mobility organic field-effect transistors based on poly(bithiophene-alt-thienothiophene)

被引：35

作者：

Wang, Shuai ^{[1
]}

Tang, Jie-Cong ^{[2
]}

Zhao, Li-Hong ^{[1
]}

Png, Rui-Qi ^{[1
]}

Wong, Loke-Yuen ^{[1
]}

Chia, Perq-Jon ^{[1
]}

Chan, Hardy S. O. ^{[2
]}

Ho, Peter K. -H. ^{[1
]}

Chua, Lay-Lay ^{[1
,2
]}

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore S117542, Singapore

[2] Natl Univ Singapore, Dept Chem, Singapore S117543, Singapore

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 16期

关键词：

D O I：

10.1063/1.3001574

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Franck-Condon absorption analysis reveals the existence of several aggregate states in poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene) (PBTTT) thin films which impact their recrystallization and the attainable field-effect mobility (mu(FET)). Poor solvents (toluene and mixed-xylenes) lock in both disordered and well-ordered states that cannot be annealed away even in the liquid crystalline phase. This reduces mu(FET) and increases mobility activation energies compared with films from good solvents (chlorobenzene and o-dichlorobenzene). Despite its poor solubility characteristics, PBTTT can be ink-jet printed in dilute chlorobenzene, and devices can be operated unencapsulated in ambient, in the dark (>10(5) cycles over several days) with only a moderate mobility loss. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3001574]

引用

页数：3

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