Structural and nonlinear optical behavior of Ag-doped ZnO films |
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Affiliation: | 1. Department of Physics, North Western University, Khulna 9100, Bangladesh;2. Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh;3. Department of Physics, Rajshahi University of Engineering & Technology, Rajshahi 6204, Bangladesh |
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Abstract: | We present the structural and nonlinear optical behavior of Ag-doped ZnO (AZO) films prepared by magnetron sputtering. The structural of AZO films are systematically investigated by X-ray diffraction (XRD) and scanning electronic microscopy (SEM), respectively. The results show that AZO films can still retain a wurtzite structure, although the c-axis as preferred orientation is decreased by Ag doping. As the amounts of the Ag dopant were increased, the crystallinity as well as the absorptivity and optical band gap were increased. Moreover, the nonlinear optical characterized of the AZO films was studied using Z-scan technique. These samples show self-defocusing nonlinearity and good nonlinear absorption behavior which increases with increasing Ag volume fraction. AZO is a potential nanocomposite material for the development of nonlinear optical devices with a relatively small limiting threshold. |
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Keywords: | Nonlinear optics Materials Thin films Optical properties Multiphoton processes |
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