The microstructure of a thin SnO 2 film prepared by pyrohydrolytic decomposition onto a glass substrate was studied by scanning transmission electron microscopy (STEM) and high-resolution transmission electron microscopy (HR-TEM) of cross-sectional specimens, and the findings were correlated with the low resistivity shown by this material when employed as a transparent electrode. The thin film was found to consist of three regions: a region which showed reaction with the glass substrate, a non-oriented polycrystalline region and an oriented columnar polycrystalline region showing a crystallographic shear (CS) structure which was thought to contribute to the low resistivity.
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Fujimoto et al. (1988) studied this question.
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