Hey, Want to share with you guys, useful information. For the manufacturing of a semiconductor like a diode or transistor, you need a wafer(substrate). These substrates are made up of either Silicon or Germanium with respective dopants. Suggest you visit this website for more information - http://www.monocrystal.com/catalog/sapphire/
-- Edited by Derrils on Thursday 4th of July 2019 03:25:15 AM