Influences of surface capping with electrostatically self-assembled PEI on the photoresponse of a TiO2 thin film

Xuehui Gu; Fanxu Meng; Guohua Liu; Haifeng Zhang; Jingran Zhou; Shengping Ruan

doi:10.1039/C3CC42745E

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Influences of surface capping with electrostatically self-assembled PEI on the photoresponse of a TiO₂ thin film†

Xuehui Gu,‡^a Fanxu Meng,‡^a Guohua Liu,^b Haifeng Zhang,^c Jingran Zhou*^a and Shengping Ruan*^b

Author affiliations

* Corresponding authors

^a State Key Laboratory on Integrated Optoelectronics, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
E-mail: zhoujr@jlu.edu.cn

^b College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
E-mail: rsp1226@gmail.com

^c School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA
E-mail: haifeng.zhang@asu.edu

Abstract

The photoresponse of a TiO₂ thin film was significantly improved due to the decrease in the Schottky barrier height between Au and TiO₂via the formation of interface dipoles, which was caused by electrostatically self-assembled PEI on the surface of the TiO₂ film.

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Article information

DOI: https://doi.org/10.1039/C3CC42745E
Article type: Communication
Submitted: 15 Apr 2013
Accepted: 24 May 2013
First published: 28 May 2013

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Chem. Commun., 2013,49, 6328-6330

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Influences of surface capping with electrostatically self-assembled PEI on the photoresponse of a TiO₂ thin film

X. Gu, F. Meng, G. Liu, H. Zhang, J. Zhou and S. Ruan, Chem. Commun., 2013, 49, 6328 DOI: 10.1039/C3CC42745E

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Chemical Communications