Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 3, Issue 12, Pages 4682-4688Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am201106v
Keywords
brush-shaped heteronanostructures; thermal-assisted pulsed laser deposition; photocurrent
Funding
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science, and Technology [2011K000623, R32-2011-000-10082-0, 20090066917, 20090084750]
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Brush-shaped ZnO heteronanostructures were synthesized using a newly designed thermal-assisted pulsed laser deposition (T-PLD) system that combines the advantages of pulsed laser deposition (PLD) and a hot furnace system. Branched ZnO nanostructures were successfully grown onto CVD-grown backbone nanowires by T-PLD. Although ZnO growth at 300 degrees C resulted in core-shell structures, brush-shaped hierarchical nanostructures were formed at 500-600 degrees C. Materials properties were studied via photoluminescence (PL), scanning electron microscopy (SEM) and trans mission electron microscopy (TEM) characterizations. The enhanced photocurrent of a SnO2-ZnO heterostructures device by irradiation with 365 nm wavelength ultraviolet (UV) light was also investigated by the current-voltage characteristics.
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