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Abstract
ZnO thin films were deposited on SiO2/Si(100) and single-crystal MgO substrate using pulsed laser deposition. High-quality ZnO thin films were fabricated on both substrates successfully. Interdigital transducer-shaped Al electrodes were used for measuring electrical properties. Electrical current as a function of voltage, temperature-dependent I-V, and impedance of ZnO thin films were measured. ZnO thin films on MgO substrate show ohmic behavior. On the other hand, ZnO thin films on SiO2/Si(100) substrate show good thermal stability but Schottky-like diode behavior.