Characterization of wurtzite indium nitride synthesized from indium oxide by In-115 MAS NMR spectroscopy

摘要

Wurtzite indium nitride (w-InN) powders synthesized from the reaction of indium oxide (In_2O_3) with ammonia were characterized by ~(115)In magic-angle spinning (MAS) NMR spectroscopy and nitrogen analyzer. The powders were not a single phase of w-InN but a mixture of w-InN and In-incorporated w-InN. The incorporation of In metal in InN lattice due to thermal decomposition caused the ~(115)In MAS NMR peak of w-InN to be downfield shifted and might be responsible for the increase in the band gap of w-InN.