Lattice dilatation of small silicon crystallites - implications for amorphous silicon

Abstract The lattice constant, d, of polycrystalline, hydrogenated silicon with a mean crystallite size less than 100 A shows an expansion which increases with decreasing crystallite size, reaching a limiting value of Δd/d0 ≈ 0.9 − 1.2% for a crystallite size of about 30 A. Implications of this result for some properties of amorphous silicon are briefly discussed.

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