“…Because of its tremendous application potentials, various forms of ZnO such as powder [5,6], flake [7,8], film [9,10], nanorod [11], nanowire [12] and so on, have been extensively investigated. For ZnO films doped with aluminum, excellent properties such as great reflectance in infrared region, sound absorbance of UV light, more than 85% of transmittance in visible light region and specific resistivity of 1-5 × 10 −4 cm have been obtained up to now [13].…”