Synthesis and characterization of Al doped ZnO terrace-truncated
nanocone structure by advanced spray pyrolysis deposition technique

Electronics and Materials Science Course, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8561, Japan

We have synthesized a terrace-truncated nanocone structure of Al-doped ZnO using the advanced spray pyrolysis deposition technique. In this study, we proposed the growth mechanism of a terrace-truncated nanocone structure. The average top diameter is 35-40 nm and the height of the structure varies between 600-650 nm. The nanostructure was favored along the c-axis as confirmed by X-ray diffraction patterns. The electrical conductivity and optical transmittance in the visible range are 5.1×10³ Ω^-1·cm^-1 and 80%, respectively. The proposed terrace-truncated nanocone structure of Al-doped ZnO has suitable characteristics for use as a transparent conductive oxide material.

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