Issue 44, 2017
From the journal:

RSC Advances

Highly sensitive pressure switch sensors and enhanced near ultraviolet photodetectors based on 3D hybrid film of graphene sheets decorated with silver nanoparticles†

Guang Yao, ORCID logo a   Hulin Zhang,a   Shangjie Zhang,a   Feiyi Liao,a   Zhenlong Huang, ORCID logo a   Bixiong Biebc  and  Yuan Lin*a  

* Corresponding authors

a State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P. R. China
E-mail: linyuan@uestc.edu.cn

b The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, P. R. China

c School of Science, Wuhan University of Technology, Wuhan, Hubei 430070, P. R. China

Abstract

Pressure switch sensors and near ultraviolet (NUV) photodetectors based on graphene nanosheets and silver nanoparticles composites were proposed and fabricated. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectra, ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared (FTIR) spectra, energy dispersive spectroscopy (EDS), field effect scanning electron microscopy (FESEM), and transmission electron microscopy (TEM) have been employed to characterize the composites. The device based on a flexible pyramid-structured polydimethylsiloxane (PDMS) substrate was investigated as a pressure sensor, showing that the interface contact resistance can be changed sensitively by the applied pressure. In addition, benefiting from a combined effect of three-dimensional structure and enhanced light absorption of silver nanoparticles, NUV photodetectors based on the composites show a high photocurrent, a short response and recovery time of 2 ms under 365 nm NUV illumination of 0.5 mW cm−2. This work presented a simple route to obtain high performance pressure switch sensors and ultraviolet photodetectors, and would be of some benefit in device manufacture.

Graphical abstract: Highly sensitive pressure switch sensors and enhanced near ultraviolet photodetectors based on 3D hybrid film of graphene sheets decorated with silver nanoparticles

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Article information

DOI
https://doi.org/10.1039/C7RA02342A
Article type
Paper
Submitted
25 Feb 2017
Accepted
16 May 2017
First published
23 May 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 27281-27289

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Highly sensitive pressure switch sensors and enhanced near ultraviolet photodetectors based on 3D hybrid film of graphene sheets decorated with silver nanoparticles

G. Yao, H. Zhang, S. Zhang, F. Liao, Z. Huang, B. Bie and Y. Lin, RSC Adv., 2017, 7, 27281 DOI: 10.1039/C7RA02342A

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