C-plane sapphire substrates can be used in the semiconductor LED industry: for example, the production of high-brightness white, blue and green LEDs.

currently, many manufacturers and research institutes are exploring how to further improve the performance of the sapphire substrate to meet the needs of higher efficiency and higher brightness LED manufacturing. c-plane sapphire substrates are also used in the manufacture of microwave integrated circuits, RF integrated circuits and other microelectronic devices, with its good electrical insulation and thermal stability are key advantages.

Optical components: Sapphire wafers are used in the manufacture of infrared devices, high intensity laser lens materials and photomask materials. Sapphire has a wide optical transmission band, with excellent light transmission from the near-ultraviolet (190nm) to the mid-infrared.