Patent ID: 7964417

Claim:
A method of measuring a degree of crystallinity of a polycrystalline silicon substrate, the method comprising: obtaining a Raman spectrum graph by irradiating a polycrystalline silicon substrate with monochromatic light; deconvolving the Raman spectrum graph into a peak corresponding to amorphous silicon and having a center at 480 cm −1 and a peak corresponding to polycrystalline silicon and having a center at 517 cm −1 ; calculating the peak area of the amorphous silicon and the peak area of the polycrystalline silicon from data obtained during the deconvolving of the Raman spectrum graph; and calculating a degree of crystallinity of the polycrystalline silicon substrate using the calculated peak area of the amorphous silicon and the calculated peak area of the polycrystalline silicon from the Raman spectrum graph in the following formula: (degree of crystallinity)=(peak area of polycrystalline silicon)/[(peak area of amorphous silicon)+(peak area of polycrystalline silicon)].