The Preparation of Large diameter Twin-free InP Crystals

InP substrates have been indispensable to both optical and electronic devices. The cost reduction in the manufacturing process of these devices and the increase in size of IC chips have strongly required a larger diameter of these substrate wafers. Promoted by this requirement, InP single crystal technology has been rapidly developed. In the present paper, the development and key technology of large diameter twin-free InP crystal growth are discussed