Utility of ZnGa 2 O 4 Nanoparticles Obtained Hydrothermally for Preparation of GaN:ZnO Solid Solution Nanoparticles and Transparent Films

Yusuke Asakura, Yukiho Nishimura, Yuji Masubuchi, Shu Yin

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    GaN:ZnO solid solution nanoparticles and films were synthesized by using ZnGa 2 O 4 nanoparticles with a particle size of below 25 nm obtained hydrothermally as a precursor. Nitridation of powder ZnGa 2 O 4 nanoparticles led to the formation of GaN:ZnO nanoparticles. The nitrided samples have higher specific surface area than those obtained by conventional method, which induces higher photocatalytic NO x decomposition activity. In addition, a transparent coating film with ZnGa 2 O 4 nanoparticles was converted to GaN:ZnO film after nitridation. The nitrided film absorbs UV and blue light and is transparent for light of wavelength over 500 nm (the transmittance is over 90 %). This means that the nitridation does not lead to the formation of scattering domains by the large-size particles and cracks. This method for film preparation is much cheaper than conventional CVD and sputtering processes. These results strongly suggest the utility of ZnGa 2 O 4 nanoparticles not only for the formation of GaN:ZnO solid solution nanoparticles with high specific surface area but also for the preparation of transparent GaN:ZnO solid solution films.

    Original languageEnglish
    Pages (from-to)1999-2005
    Number of pages7
    JournalEuropean Journal of Inorganic Chemistry
    Volume2019
    Issue number14
    DOIs
    Publication statusPublished - 2019 Apr 16

    Keywords

    • Nanostructures
    • Nitrides
    • Oxynitrides
    • Photocatalysis
    • Thin films

    ASJC Scopus subject areas

    • Inorganic Chemistry

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