Zinc oxide single crystal

摘要

An objective of the present invention is to provide a zinc oxide (ZnO) single crystal whose electroconductivity is excellent and which has a high quality. The invention relates to a zinc oxide single crystal whose concentration of metals other than zinc in the crystal fulfills the following equation: <?in-line-formulae description="In-line Formulae" end="lead"?>[-cM]/[+cM]>=3<?in-line-formulae description="In-line Formulae" end="tail"?> wherein M is a metal other than zinc, [-cM] is a concentration of M in a -c region in the zinc oxide crystal, and [+cM] is a concentration of M in a +c region in the zinc oxide crystal.