Abstract
This paper presents experimental and theoretical piezoelectric photoacoustic spectra of ZnSe samples after different surface treatments: grinding, polishing, and etching. The modification of the Jackson and Amer theory, presented in the paper, enabled numerical interpretation of the spectra in the model of a mechanically damaged surface layer. The nature of the characteristic peak observed at E = 2.65 eV below the energy gap is explained as caused by the Urbach absorption tail and the damaged surface layer of a sample. The correlation between the microhardness of the Zn1-x Be x Se and ZnSe crystals and the thickness of the mechanically damaged surface layer was observed.
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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Zakrzewski, J., Maliński, M. & Strzałkowski, K. Influence of the Surface Mechanical Treatment on the Photothermal Piezoelectric Spectra of ZnSe Crystals. Int J Thermophys 33, 1228–1238 (2012). https://doi.org/10.1007/s10765-012-1250-9
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DOI: https://doi.org/10.1007/s10765-012-1250-9