The local atomic structure and surface morphology of thin semiconductor films of Ge have been studied via extended X-ray absorption fine structure spectroscopy and atomic force microscopy. The films have been obtained by thermal evaporation of a material in an ultrahigh vacuum at different substrate temperatures. The films contain both amorphous and nanocrystalline phases. The percentage of the phases depends on the condensation temperature. The classical linear dependence of grain sizes on condensation temperature T is violated at T=100A degrees C.
机构:
Middle East Tech Univ, Dept Phys, TR-06800 Ankara, Turkey
Middle East Tech Univ, Ctr Solar Energy Res & Applicat GUNAN, TR-06800 Ankara, TurkeyGebze Tech Univ, Dept Phys, TR-41400 Kocaeli, Turkey
机构:
Middle East Tech Univ, Dept Phys, TR-06800 Ankara, Turkey
Middle East Tech Univ, Ctr Solar Energy Res & Applicat GUNAN, TR-06800 Ankara, TurkeyGebze Tech Univ, Dept Phys, TR-41400 Kocaeli, Turkey