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) Power–current–voltage curves of a blue InGaN LD packaged with TO-56 under room-temperature and continuous-wave conditions; (b) EL spectra of green LD below and above threshold current. Inset shows micro-PL image of the green LD structure, indicating homogeneous luminescence and no dark spot.