Growing InN films by plasma-assisted metalorganic vapor-phase epitaxy on Al$_2$O$_3$ and YSZ substrates in plasma generated by gyrotron radiation under electron cyclotron resonance conditions
Abstract:
Hexagonal indium nitride (InN) films on (111)- and (100)-oriented yttria-stabilized zirconia (YSZ) substrates and (0001)-oriented Al$_2$O$_3$ substrates have been grown for the first time at a rate of 1 $\mu$m/h by the method of metalorganic vapor-phase epitaxy with plasma-assisted nitrogen activation in an electron cyclotron resonance discharge generated by gyrotron radiation at low-temperature (350$^\circ$C) growth. InN films grown without buffer layers possess a textured polycrystalline structure. Using an InN/GaN double buffer layer, single-crystalline InN films have been obtained on Al$_2$O$_3$(0001) substrates. Data on the morphology, structure, and photoluminescent properties of the obtained InN films are presented.