SEARCH Articles Figures Tables Alternative Oxide Substrates for GaN Heteroepitaxy Cubic Substrates for Growth of GaN and Related Compounds Dislocation Mechanisms in GaN Films Grown on Porous Substrates or Interlayers HVPE Growth of GaN on Porous SiC Substrates Lateral Epitaxy and Microstructure in Selectively Grown GaN on SiC Substrates Sapphire Substrates for Growth of GaN and Related Compounds SiC Substrates for Growth of GaN and Related Compounds