Organic phototransistor based on poly(3-hexylthiophene)/TiO2 nanoparticle composite

被引：119

作者：

Mok, Sheung Man ^{[1
]}

Yan, Feng ^{[1
]}

Chan, Helen L. W. ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 02期

关键词：

D O I：

10.1063/1.2957981

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Light sensitive phototransistor based on the composite of poly(3-hexylthiophene) and TiO2 nanoparticles has been developed. The device shows a quick change in channel current under light exposure, which can be attributed to a positive shift of the threshold voltage, while no change in the field effect mobility and off current can be observed. The shift of the threshold voltage is induced by accumulated electrons trapped by the TiO2 nanoparticles in the channel. The photosensitivity of the device has been found to be dependent on the concentration of TiO2 nanoparticles, the incident wavelength and the voltage between the source and drain. (C) 2008 American Institute of Physics.

引用

页数：3

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