Lasing action of ZnO nanowires grown by mist chemical vapor deposition using thin Au layer on c-plane sapphire substrate

ZnO nanowires were grown by mist chemical vapor deposition at a growth temperature of approximately 900 degrees C (tube furnace temperature) on a c-plane sapphire substrate sputtered with a thin Au layer with a designed thickness of 3 nm. ZnO nanowires of various lengths were grown, and their optical properties were investigated by room-temperature photoluminescence (RT-PL) measurements under high excitation conditions. The RT-PL spectra having sharp peaks may be capable of lasing actions. The result shows that this fabrication technique is useful for obtaining optical microcavities based on ZnO nanowires.

Automated summary

ZnO nanowires were grown on a c-plane sapphire substrate with a thin Au layer using mist chemical vapor deposition at a high growth temperature. The nanowires showed potential for lasing actions under high excitation conditions, making them useful for optical microcavities based on ZnO nanowires.