Patent ID: 8623137
Filing Date: 2014-01-07
Classification: B28D,C01B,C30B,H01L

Abstract:
1. A method for slicing a shaped silicon ingot, the method comprising: providing a single crystal silicon boule characterized by a cropped structure including a first end-face, a second end-face, and a length along an axis in an <100> crystallographic direction substantially vertically extending from the first end-face to the second end-face; cutting the single crystal silicon boule substantially through a {110} crystallographic plane in parallel to the axis to separate the single crystal silicon boule into a first portion with a first surface and a second portion with a second surface, the first portion and the second portion being separated and not connected through any portion of the silicon boule, wherein the first surface of the first portion is a planar surface substantially along a {110} crystallographic plane, and the second surface of the second portion is a planar surface substantially along a {110} crystallographic plane; exposing either the first surface of the first portion or the second surface of the second portion; and performing a layer transfer process to form a single crystal silicon sheet from either the first surface of the first portion or from the second surface of the second portion.