High charge-carrier mobilities in blends of poly(triarylamine) and TIPS-pentacene leading to better performing X-ray sensors

被引：57

作者：

Intaniwet, Akarin

Keddie, Joseph L. ^{[1
]}

Shkunov, Maxim

Sellin, Paul J.

机构：

[1] Univ Surrey, Dept Phys, Surrey GU2 7XH, England

来源：

ORGANIC ELECTRONICS | 2011年 / 12卷 / 11期

关键词：

Sensors; Mobility; X-ray detection; Charge transport; Time-of-flight photocurrent; TIPS pentacene; FIELD-EFFECT TRANSISTORS; REGIOREGULAR POLY(3-HEXYLTHIOPHENE); ORGANIC TRANSISTORS; SOLAR-CELLS; TRANSPORT; DEVICES; SEMICONDUCTOR; DEPENDENCE;

D O I：

10.1016/j.orgel.2011.08.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new class of X-ray sensor - in which there is a blend of poly(triarylamine) (PTAA) and 6,13-bis(triisopropylsilylethynyl) (TIPS)-pentacene in the active layer of a diode structure - has been developed. The crystalline pentacene provides a fast route for charge carriers and leads to enhanced performance of the sensor. The first time-of-flight charge-carrier mobility measurement of this blend is reported. The mobility of PTAA and TIPS-pentacene in a 1:25 molar ratio was found to be 2.2 x 10 (5) cm(2) V (1) s (1) (averaged for field strengths between 3 x 10(4) and 4 x 10(5) V cm (1)), which is about 17 times higher than that obtained in PTAA over the same range of field strengths. This higher mobility is correlated with a fourfold increase in the X-ray detection sensitivity in the PTAA:TIPS-pentacene devices. (C) 2011 Elsevier B.V. All rights reserved.

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页码：1903 / 1908

页数：6

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