Effect of solution aging on morphology and electrical characteristics of regioregular P3HT FETs fabricated by spin coating and spray coating

被引：73
作者：
Bielecka, U. [1 ]
Lutsyk, P. [1 ,2 ]
Janus, K. [1 ]
Sworakowski, J. [1 ]
Bartkowiak, W. [1 ]
机构：
[1] Wroclaw Univ Technol, Inst Phys & Theoret Chem, PL-50370 Wroclaw, Poland
[2] Natl Acad Sci Ukraine, Inst Phys, UA-03680 Kiev, Ukraine
来源：
ORGANIC ELECTRONICS | 2011年 / 12卷 / 11期
关键词：
OFET; Poly(3-hexylthiophene); Nanofibers; Spray coating; FIELD-EFFECT MOBILITY; POLY(3-HEXYL THIOPHENE); TRANSPORT; TRANSISTORS;
D O I：
10.1016/j.orgel.2011.06.027
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The paper reports on a comparative study of poly(3-hexylthiophene) (P3HT) films as well as P3HT organic field effect transistors (OFETs) fabricated by the spin coating and spray coating techniques, using fresh and aged (for 2 months) chloroform solutions. The films obtained from aged solutions contain nanostructured fibers of the polymer. The presence of nanofibers in P3HT thin films affects the performance of the OFETs: charge carrier mobilities in the samples deposited from the aged solutions appeared over one order of magnitude higher than those fabricated using fresh solutions. Particularly high mobilities, exceeding 10 (2) cm(2) V (1) s (1), were found in spin coated samples deposited from aged solutions. Additionally, the latter samples exhibit a certain degree of anisotropy, associated with the action of centrifugal force during the deposition. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1768 / 1776
页数：9
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