Patent ID: 9274069
Filing Date: 2016-03-01
CPC Classification: C01B,C30B,G01N

Claim Text:
1. A method for evaluating the degree of crystalline orientation of polycrystalline silicon by an X-ray diffraction method, the evaluating method comprising: forming the polycrystalline silicon into a plate-like sample; disposing the plate-like sample in a position where Bragg reflection from a Miller index face <hkl> is detected; performing in-plane rotation of the plate-like sample at a rotational angle φ with the center of the plate-like sample as the center of rotation, so that an X-ray-radiated region defined by a slit φ-scans over the principal surface of the plate-like sample, to determine a chart representing the dependence of the intensity of Bragg reflection from the Miller index face <hkl> on the rotational angle (φ) of the plate-like sample; determining a baseline from the chart; and using the diffraction intensity value of the baseline as the estimative index of the degree of crystalline orientation.