Patent ID: 9219187
Filing Date: 2015-12-22
Classification: H01L,Y02E

Abstract:
1. A method comprising: obtaining a silicon-on-insulator substrate including a semiconductor layer, a handle substrate, and an insulating layer between the semiconductor layer and handle substrate, the silicon-on-insulator substrate including a plurality of solar cell structures; forming a device layer comprising an integrated circuit on the semiconductor layer of the silicon-on-insulator substrate; connecting the solar cell structures in series; attaching a stressor layer to the silicon-on-insulator substrate over the device layer; attaching a flexible handle layer to the stressor layer; cleaving through the handle substrate by exerting a force on the flexible handle layer; separating a cleaved portion of the handle substrate from the handle substrate, leaving a thin handle layer attached to the device layer and comprising the plurality of solar cell structures, and removing a selected portion of the thin handle layer, thereby electrically isolating the solar cell structures from each other; wherein the step of obtaining the silicon-on-insulator substrate further includes forming the plurality of solar cell structures while forming the silicon-on-insulator substrate.