Patent ID: 8337617
Filing Date: 2012-12-25
Classification: C30B,Y10T

Abstract:
1. A method for manufacturing a group III nitride crystal on a seed crystal in a holding vessel holding therein a melt containing a group III metal, an alkali metal and nitrogen, comprising the steps of: causing said seed crystal to make a contact with said melt; setting an environment of said seed crystal to a first state offset from a crystal growth condition while in a state in which said seed crystal is in contact with said melt; increasing a nitrogen concentration in said melt; and setting said environment of said seed crystal to a second state suitable for crystal growth when said nitrogen concentration of said melt has reached a concentration suitable for growing said group III nitride crystal on said seed crystal, characterized in that said step of setting said environment to said first state is conducted by setting a temperature of said seed crystal to be higher than a temperature of said melt, and wherein said step of setting said environment to said second state is conducted by setting said temperature of said seed crystal to be equal to or lower than said temperature of said melt.