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Hexagonal ZnO microdisks were obtained by using InN/sapphire as substrate via the aqueous method. The growth mechanism of the ZnO microdisks was proposed and demonstrated. Moreover, the optical properties of the ZnO microdisks were investigated by micro-photoluminescence, whispering gallery mode (WGM) lasing from the microdisk was observed at moderate excitation density. It will provide a new way...
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