Progress in bulk GaN growth<xref ref-type="fn" rid="cpb151014fn1">*</xref>

Progress in bulk GaN growth*

Xu Ke^a),^b)†, Wang Jian-Feng^a),^b), Ren Guo-Qiang^a),^b)

(a) A series of characteristic IR luminescence with a sharp zero-phonon line (ZPL) at 1.299 eV at low temperature, (b) quenching of the intensity of near band edge excitonic emissions in the UV region, (c) a kind of phonon mode originating from V_N.