Applied Physics Letters 68(7), 935 (1996).
Using plasma-assisted MOCVD, highly resistive GaN films were grown on (0001) sapphire substrates. SIMS data show equal amount of C and H incorporation, suggesting CH complex formation. The CH-doped films remains highly resistive after annealing in N2 up to 900C. The C and H concentrations can be reduced when the Ga and N sources are alternately supplied.
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