Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 60, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.35848/1347-4065/ac21b2
Keywords
ZnO; mist-CVD; random lasing; nanostructure
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The photoluminescence properties of ZnO disordered nanocrystals fabricated by mist-CVD were investigated, and random lasing behavior was observed under high optically pumped conditions, indicating the potential usefulness of this technique for fabricating optical microcavities.
We fabricated ZnO disordered nanocrystals on a c-plane sapphire substrate by mist chemical vapor deposition (mist-CVD). Grown ZnO disordered nanocrystals were two-dimensionally arrayed, and the height was determined to be less than approximately 200 nm based on scanning electron microscope observation. We investigated the photoluminescence properties of the grown ZnO disordered nanocrystals, and random lasing behaviors were considered to be observed owing to variable sharp peaks and spikes in photoluminescence spectra under high optically pumped conditions. Based on the results, the mist-CVD may be a useful crystal growth technique to fabricate optical microcavities based on ZnO disordered nanocrystals.
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