Influence of Annealing on Optical Properties of ZnO Nanorods Obtained by the Microwave-Assisted Hydrothermal Process
P. Materska a, B.S. Witkowskib and M. Godlewskia,b
aDept. of Mathematics and Natural Sciences College of Science, Cardinal S. WyszyƄski University, Dewajtis 5, 01-815 Warsaw, Poland
bInstitute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
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Optical properties of ZnO nanorods (of different sizes, grown on two different substrates) are investigated. Nanorods were grown using microwave-assisted hydrothermal process on gallium nitride or silicon substrate. To initiate nanorods growth on a silicon substrate ZnO nucleation layer was used. ZnO nanoseeds were deposited by atomic layer deposition. For GaN substrate an epitaxial relation was observed. For both substrates nanorods show a hexagonal structure, expected for wurtzite ZnO. Results of nanorods annealing are discussed.

DOI: 10.12693/APhysPolA.130.1202
PACS numbers: 78.55.-m, 61.46.-w, 61.72.Cc