AGC invested in NCT in 2018 and began joint development with the belief that gallium oxide mass production could be achieved at an early stage by leveraging NCT's innovative technological capabilities together with AGC's inorganic material mass production technologies, including the high-temperature melting, polishing, and cleaning capabilities that AGC has built up over the years in glass manufacturing. While efforts to date have succeeded in developing mass production technology for 4-inch gallium oxide wafers, AGC has decided to make an additional investment in the company with the aim of achieving even better quality and larger wafers in the future.
*1: Baliga's Figure of Merit (BFOM). When using 1 to represent the BFOM of silicon, the corresponding value of gallium oxide is 3444. See the table below for more details.
Established in June 2015, Novel Crystal Technology is a 'carve-out' venture from the Tamura Corporation and a technology transfer venture from National Institute of Information and Communications Technology (NICT). The company is engaged in the development, manufacturing and sale of gallium oxide single crystal substrates and epitaxial wafers, which are used as power semiconductor materials, as well as the development of power devices. In November 2017, Novel Crystal Technology, in collaboration with Tamura Corporation, successfully developed the world's first trench MOS-type power transistor made with gallium oxide epitaxial film. The company is focusing efforts on being a world pioneer in the practical application of gallium oxide-based power semiconductors.
■ Physical Properties of next-generation power semiconductor materials
The higher the Baliga's Figure of Merit, the lower the on-resistance when driving devices. (see figure below)