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) Photograph of a thick 1-inch a-GaN bulk crystal (from Ref. [ 90 ]), (b) photograph of 2-inch c -plane A-GaN substrate (from Ref. [ 27 ]), (c) photograph of 1-inch m -plane A-GaN crystal (manufactured at AMMONO company) (from Ref. [ 27 ]), (d) photograph of a 2-inch (0001) SCoRA GaN crystal grown on an SCoRA seed (from Ref. [ 94 ]).