Vapour Growth of Single-Crystal Zinc Oxide

A vapour technique is described by which single-crystal zinc oxide may be grown. Sintered, polycrystalline zinc oxide, contained in a tube furnace, is first reduced by hydrogen to zinc vapour, which is then re-oxidised to form single-crystal zinc oxide in the furnace hot-zone. The effect of temperature and gas flow on the crystal type is reported, together with some crystal properties, including resistivity and drift mobility.