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  • Identification of oxygen va...
    Liu, L. Z.; Li, T. H.; Wu, X. L.; Shen, J. C.; Chu, P. K.

    Journal of Raman spectroscopy, October 2012, Letnik: 43, Številka: 10
    Journal Article

    Raman spectra acquired from spherical SnO2 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 O2 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 SnO2 nanocrystals. Copyright © 2012 John Wiley & Sons, Ltd. Raman spectra can be used to discern different types of oxygen vacancies in SnO2 nanocrystals