Patent ID: 8062956
Filing Date: 2011-11-22
Classification: H01L

Abstract:
1. A method of forming a semiconductor on glass structure, comprising: bringing a first surface of a glass substrate into direct or indirect contact with a semiconductor wafer; heating at least one of the glass substrate and the semiconductor wafer such that a second surface of the glass substrate, opposite to the first surface thereof, is at a lower temperature than the first surface; applying a voltage potential across the glass substrate and the semiconductor wafer; and maintaining the contact, heating and voltage to induce an anodic bond between the semiconductor wafer and the glass substrate via electrolysis; and wherein: the semiconductor wafer is a donor semiconductor wafer, and the method further comprises: subjecting an implantation surface of the donor semiconductor wafer to an ion implantation process to create an exfoliation layer of the donor semiconductor wafer; bringing the first surface of the glass substrate into direct or indirect contact with the implantation surface of the donor semiconductor wafer, prior to the heating and voltage steps to induce an anodic bond between the implantation surface of the donor semiconductor wafer and the glass substrate via electrolysis; and subsequent to the maintaining step, removing the voltage potential across the glass substrate and the semiconductor wafer and then, subsequent to the voltage removal step, separating the glass substrate and semiconductor wafer; wherein the 0-300° C. average coefficient of thermal expansion (CTE) of the glass substrate is less than 32×10