Solar of Sunnyvale, Calif., has acquired $18.7 million in venture funding to deploy a second line of copper indium gallium diselenide (CIGS) thin-film solar cells. The Series B investment, which was more than the company received for its first round of funding, brings the total capital it has attracted to almost $40 million. This funding round follows a year of consistent progress and growth for AQT, the company said. The CIGS 2.0 technology line allows for continuous in-line production, simplifying and streamlining the manufacturing process. The process has resulted in the development, shipment and scaling of CIGS module products in just four years.