Established as Ferrofluidics and previously doing business as GT Equipment Technologies and GT Solar Incorporated, GT Advanced Technologies, Inc. is a technology company specializing in crystal growth and technologies related to solar energy. With a complex and diverse history of business operations - publicly traded 2008-2016; bankruptcy in 2014 - GT Advanced Technologies offered directional solidification systems units: furnaces that melt polysilicon and cast multicrystalline ingots for use in production of solar wafers and solar cells; and wafer cleaning and etch systems, slurry recovery systems, cell testing and sorting equipment, tabber/stringer machines, and other related parts and consumables. The company also offers chemical vapor deposition reactors that produce polysilicon and silicon tetrachloride converters, which recycle silicon tetrachloride gas used in the CVD reactor process, as well as related equipment to chemical companies, and solar wafer and cell manufacturers. In addition, principals of the firm provides facility design, equipment installation and integration, technical training, and manufacturing process optimization services. With the company selling its products to polysilicon, solar wafer, cell, and module manufacturers through its direct sales force, as well as through third-party sales representatives, one of the three acquisitions listed for the firm included long-time (and early involved) SBIR firm Crystal Systems, Salem MA
