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Improving the optical and crystal properties of ZnO nanotubes via a metallic glass quantum dot underlayer

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Abstract

In this study, high density (∼38 μm−2) ZnO nanotubes (NTs) were hydrothermally synthesized on a Cu47.2Zr42.1Al6.7Ti4.0 metallic glass quantum dot (MGQD)/glass substrate. The MGQD acts as a buffer and seed layer to improve the optical and crystalline properties of the ZnO nanotubes. The photocurrent-to-dark current ratio (∼2 × 104) of the ZnO NTs/MGQD is 28.1 times higher than that of ZnO NTs due to the Schottky junction and the localized surface plasmon resonance effect of the MGQD. The photocurrent-to-dark current ratio of the ZnO NTs/MGQD junction was enhanced an additional 10-fold to ∼2.0 × 105 upon annealing at 150 °C for 30 min under ambient atmosphere. The annealing treatment also decreased the photoresponse and relaxation times.

Graphical abstract: Improving the optical and crystal properties of ZnO nanotubes via a metallic glass quantum dot underlayer

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Publication details

The article was received on 06 Jan 2019, accepted on 28 Mar 2019 and first published on 01 Apr 2019


Article type: Paper
DOI: 10.1039/C9TC00085B
Citation: J. Mater. Chem. C, 2019, Advance Article

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    Improving the optical and crystal properties of ZnO nanotubes via a metallic glass quantum dot underlayer

    B. Huang, J. P. Chu, C. Hsu, J. E. Greene, Y. Chen and C. Chang, J. Mater. Chem. C, 2019, Advance Article , DOI: 10.1039/C9TC00085B

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