Crystallization of thin selenium films
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The effect of the crystallization temperature and the substrate material on the morphology of the crystals produced by the heating of amorphous selenium films have been studied by electron microscopy and microscopic electron diffraction. The transition from ordinary crystallization to spherulite crystallization is found to be governed primarily by the crystallization temperature, and the spherulite crystallization is observed only at low temperatures. The substrate material affects only the ratio of the rates at which various crystal faces grow; it does not affect the transition from one type of crystallization to another. On all substrates, spherulites form as a result of the splitting of initial single-crystal nuclei; the crystallography of the splitting is the same.
KeywordsMicroscopy Electron Microscopy Crystallization Selenium Electron Diffraction
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