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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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Publication details

The article was received on 20 Feb 2014, accepted on 30 Apr 2014 and first published on 05 May 2014


Article type: Paper
DOI: 10.1039/C4NR00963K
Citation: Nanoscale, 2014,6, 8084-8090
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    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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