Optimization of ZnO seed layer for growth of vertically aligned ZnO nanorods on glass surface

Abstract

Vertically well aligned zinc oxide (ZnO) nanorods have been developed for the application to photoanode of dye-sensitized solar cells (DSCs). For the growth of the ZnO nanorods, a seed layer is necessary. Spin coating and chemical bath deposition methods are chosen to form the seed layer and the ZnO nanorods, respectively. The effects of speed and cycle number of spin coating are investigated. The most optimized nanorods was found at seed layer with growing conditions of 3000 RPM rotational speed repeated for 3 times. The SEM image shows the longest length at 1.5 -2 m length while the XRD chart shows considerable peak at (002) crystallinity.

Hydrothermal Growth of Zinc Oxide (ZnO) Nanorods (NRs), Structural, and Chemical Composition Studies for pH Measurement Sensor Applications

“…One-dimensional (1D) Zinc oxide (ZnO) which have a direct wide band gap (3.37eV) semiconductor with a large excitation binding energy (60 meV) at room temperature. They have attracted considerable attention because of their potential application in different area (15), ZnO Nanorods (NRs) has been applied in various applications, such as in light-emitting diode, optoelectronics application (16)(17) gas and chemical sensors (18)(19)(20)(21), capacitive sensors (22) dye-sensitized solar cell (23)(24)(25)(26) and biosensors (27)(28).…”