Effect of Zn(NO3)2 concentration in hydrothermal-electrochemical deposition on morphology and photoelectrochemical properties of ZnO nanorods

- Combined hydrothermal-electrochemical deposition was used to grow ZnO films.
- 1-D ZnO NRs are obtained even at high Zn(NO3)2 concentrations (1 mM < [Zn2+] < 0.1 M).
- Aspect ratio and alignment of ZnO NRs can be controlled by initial [Zn(NO3)2].
- [Zn2+] dependent structural and photoelectrochemical properties have been studied.
- Photocurrent density exhibited by ZnO NRs increases with increasing aspect ratio.