Profile: MEMC Electronic Materials, Inc. is a manufacturer of wafers and related products to the semiconductor & solar industries. We are an ISO 9001 certified company. Our polished wafer product is a highly refined, ultra pure wafer of crystalline silicon with ultra flat, and ultra clean surfaces. We provide epitaxial wafers, which consist of a thin, single crystal silicon layer grown on the polished surface of a silicon wafer substrate. This epi layer is designed to have different compositional and electrical properties from the underlying wafer, tailored to the specific demands of the device.