Patent ID: 9206508
Filing Date: 2015-12-08
Classification: C01B,C23C

Abstract:
1. A method of producing bulk silicon material in a chemical deposition reactor, comprising: providing a silicon deposition surface within the chemical deposition reactor; introducing hydrogen and a silicon precursor gas into the chemical deposition reactor, wherein the silicon precursor gas is silane or a gas selected from the group consisting of dichlorosilane, trichlorosilane, silicon tetrachloride, and mixtures thereof; non-uniformly irradiating portions of the surface of the silicon deposition surface using radiation from an array of non-uniformly distributed lasers wherein the array of non-uniformly distributed lasers provide irradiated and non-irradiated surfaces along the longest dimension of the silicon deposition surface, wherein the said irradiated and non-irradiated surfaces comprise alternating regions of the silicon deposition surface heated to temperatures at or above a deposition temperature and regions of the silicon deposition surface at temperatures below the deposition temperature, wherein the deposition temperature is the temperature in which silicon is deposited from the silicon precursor gas; and selectively depositing bulk silicon from the silicon precursor gas near the irradiated surfaces to form a plurality of notches along the longest dimension of the silicon deposition surface; and breaking the selectively deposited silicon deposition surface with the plurality of notches at the notches.