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Microstructure and enhanced photoluminescence of ZnO/V₂O₅ composite

Electrical and Electronic Department, Changzhou Institute of Technology, No. 299 South Tongjiang Road, Changzhou, Jiangsu 213002, P. R. China

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Fei Chen

Electrical and Electronic Department, Changzhou Institute of Technology, No. 299 South Tongjiang Road, Changzhou, Jiangsu 213002, P. R. China

E-mail Address: sinhwazhan@hotmail.com

Corresponding author.

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Zoran Salcic

Electrical and Electronic Engineering Department, The University of Auckland, Auckland, New Zealand

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Chee Cheong Wong

School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore City 639798, Singapore

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, and

Wei Gao

Chemical and Materials Engineering Department, The University of Auckland, Auckland, New Zealand

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https://doi.org/10.1142/S0217979217440519Cited by:1 (Source: Crossref)

Abstract

Submicron zinc oxide (ZnO) spheres prepared by a two-stage hydrothermal method were assembled into a layer on a substrate by vertical deposition. Vanadium pentoxide (V₂O₅) was deposited onto the top of ZnO spheres by magnetron sputtering followed by annealing in oxygen atmosphere at 500 $^{\circ}$ $^{\circ}$ C for an hour. The microstructures and optical properties of the prepared samples were investigated. The photoluminescence (PL) results indicate that the intensity of PL in the annealed ZnO/V₂O₅ composite microstructures is dramatically improved compared to the constituent V₂O₅ and ZnO spheres. The intensity enhancement of light emission from the ZnO/V₂O₅ composite may be attributed to the special microstructure of ZnO particles and the coupling effect between ZnO and V₂O₅. This transition oxide composite may possibly be developed into a new type of high-efficiency light emitting material.

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