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Issue 14, 2014
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Photosensing performance of branched CdS/ZnO heterostructures as revealed by in situ TEM and photodetector tests

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Abstract

CdS/ZnO branched heterostructures have been successfully synthesized by combining thermal vapour deposition and a hydrothermal method. Drastic optoelectronic performance enhancement of such heterostructures was revealed, compared to plain CdS nanobelts, as documented by comparative in situ optoelectronic studies on corresponding individual nanostructures using an originally designed laser-compatible transmission electron microscopy (TEM) technique. Furthermore, flexible thin-film based photodetectors based on standard CdS nanobelts and newly prepared CdS/ZnO heterostructures were fabricated on PET substrates, and comparative photocurrent and photo-responsivity measurements thoroughly verified the in situ TEM results. The CdS/ZnO branched heterostructures were found to have better performance than standard CdS nanobelts for optoelectronic applications with respect to the photocurrent to dark current ratio and responsivity.

Graphical abstract: Photosensing performance of branched CdS/ZnO heterostructures as revealed by in situ TEM and photodetector tests

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Supplementary files

Article information


Submitted
20 Feb 2014
Accepted
30 Apr 2014
First published
05 May 2014

Nanoscale, 2014,6, 8084-8090
Article type
Paper

Photosensing performance of branched CdS/ZnO heterostructures as revealed by in situ TEM and photodetector tests

C. Zhang, W. Tian, Z. Xu, X. Wang, J. Liu, S. Li, D. Tang, D. Liu, M. Liao, Y. Bando and D. Golberg, Nanoscale, 2014, 6, 8084
DOI: 10.1039/C4NR00963K

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