Thermally driven V2O5 nanocrystal formation and the temperature-dependent electronic structure study

Chongwen Zou; Lele Fan; Ruiqun Chen; Xiaodong Yan; Wensheng Yan; Guoqiang Pan; Ziyu Wu; Wei Gao

doi:10.1039/C1CE06170D

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Thermally driven V₂O₅nanocrystal formation and the temperature-dependent electronic structure study

Chongwen Zou,*^ab Lele Fan,^a Ruiqun Chen,^b Xiaodong Yan,^b Wensheng Yan,^a Guoqiang Pan,^a Ziyu Wu*^a and Wei Gao*^b

Author affiliations

* Corresponding authors

^a National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
E-mail: czou@ustc.edu.cn, wuzy@ustc.edu.cn

^b Department of Chemical and Materials Engineering, The University of Auckland, Auckland, New Zealand
E-mail: w.gao@auckland.ac.nz

Abstract

The temperature sensitive crystallization behavior of amorphous V₂O₅ films on glass and silicon substrates was investigated. Results indicated that after annealing in oxygen ambience, the as-sputtered amorphous V₂O₅ films on glass substrates dramatically transformed to standing β-phase V₂O₅ nanorods and flat-lying nanoslices, while large V₂O₅ particles with α-phase were obtained on Si substrates. Thermally driven surface diffusion was considered as the crystal growth mechanism and different crystallization behavior on the glass or silicon substrate was attributed to the distinct initial surface microstructures. The temperature dependent electronic properties of V₂O₅ on glass were investigated by synchrotron radiation, which clearly shows the anisotropic structure characteristics of crystallized V₂O₅ compound.

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Article information

DOI: https://doi.org/10.1039/C1CE06170D
Article type: Paper
Submitted: 08 Sep 2011
Accepted: 10 Oct 2011
First published: 08 Nov 2011

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CrystEngComm, 2012,14, 626-631

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Thermally driven V₂O₅ nanocrystal formation and the temperature-dependent electronic structure study

C. Zou, L. Fan, R. Chen, X. Yan, W. Yan, G. Pan, Z. Wu and W. Gao, CrystEngComm, 2012, 14, 626 DOI: 10.1039/C1CE06170D

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