Abstract
The effect of hydrogen on the crystallization of amorphous silicon (a-Si) by excimer laser annealing was investigated for a-Si films deposited on silicon nitride (SiNx) films. The effect of hydrogen atoms provided from SiNx films at various hydrogen concentrations was particularly studied. As hydrogen concentration increases, the grain size of polycrystalline silicon (poly-Si) films increases. It is found that high-quality poly-Si films are obtained at a low laser energy density by controlling the hydrogen concentration in the SiNx films and the laser energy density.
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