Patent ID: 8778078

Claim:
A process for producing a doped III-N bulk crystal, comprising: depositing a doped III-N bulk crystal, wherein III denotes at least one element of the main group III of the periodic system selected from Al, Ga and In, on a substrate or a template in a reactor, by a process that includes bringing species of at least one group III material and of at least one dopant into a vapor phase together and in admixture, feeding vaporized species of the at least one group III material and of the at least one dopant, or reaction products thereof, in mixed form into the reactor or towards a growth region of the reactor, feeding an N starting material into the reactor or towards a growth region of the reactor, and growing the doped III-N bulk crystals at a growth rate of about 200 to about 1000 μm/h, wherein the doped III-N bulk crystal is formed with a homogeneous incorporation of the dopant into the III-N crystal, such that the produced doped III-N bulk crystal satisfies at least one of the following conditions (a) to (c): (a) in a micro-Raman mapping on a plane (i) parallel to a growth plane and/or (ii) in a growth direction, a standard deviation of the measured frequency positions of the LPP + -mode in case of (i) is 5% or lower, and in case of (ii) is 10% or lower; (b) in an MDP mapping on a plane (i) parallel to a growth plane and/or (ii) in a growth direction, a standard deviation of the photoconductivity signals in case of (i) is 5% or lower, and in case of (ii) is 10% or lower; (c) in a micro photoluminescence mapping on a plane (i) parallel to a growth plane and/or (ii) in a growth direction, a standard deviation of the line width of the D 0 X transition in case of (i) is 5% or lower, and in case of (ii) is 10% or lower.