July 20, 2012Open Access

Identification of oxygen vacancy types from Raman spectra of SnO2 nanocrystals

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Abstract

Raman spectra acquired from spherical SnO 2 nanocrystals prepared by pulsed laser ablation and hydrothermal synthesis exhibit three oxygen‐vacancy‐related Raman modes at 234, 573, and 618 cm −1 . The peak location and intensity vary with annealing temperature under O 2 finally approaching those of bulk materials. Density functional calculation discloses that the three Raman modes stem from subbridging, in‐plane, and bridging oxygen vacancies, respectively. Raman spectra can thus be used to discern different types of oxygen vacancies in SnO 2 nanocrystals. Copyright © 2012 John Wiley & Sons, Ltd.

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synapsesocial.com/papers/69dcd60f0de68e8319e53aed — DOI: https://doi.org/10.1002/jrs.4078

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Authors

L. Z. Liu

Nanjing University of Posts and Telecommunications

Tinghui Li

Shenyang Ligong University

Xinglong Wu

Northeast Normal University

Journals

Journal of Raman Spectroscopy

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Institutions

City University of Hong Kong

Nanjing University

Collaborative Innovation Center of Advanced Microstructures

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Identification of oxygen vacancy types from Raman spectra of SnO2 nanocrystals

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