Thin film semi-conductor device with enhanced optical absorption properties, and method of making same

摘要

A thin film semi-conductor device with enhanced optical absorption properties comprises a substrate (10) having a roughened or matte surface and a thin film (12) of semi- conductor material deposited on the roughened or matte surface. The roughened or matte surface is obtained by the action of a jet or stream of abrasive particles on the surface which is to be roughened.