Thermoelectric Effect and Characterization of MgZnO and InZnO Nanorods
Abstract:The present study investigates the effect of Mg and In doping concentrations on thermoelectric and morphology of ZnO nanorods at various temperatures. The Mg and In doping concentration was varied during nanorod growth to obtain various sizes of ZnO:Mg/In nanorods. The doping concentration was strongly positively correlated with the growth of ZnO. The surface current–voltage (I–V), piezoelectricity, and the thermoelectric effect of ZnO:Mg were investigated using scanning probe microscopy (SPM). The output surface potentials of the single bending ZnO, ZnO:Mg, and ZnO:In nanorod were 0.004–0.111 V, 1.070–1.466 V, and 0.324–0.416 V, respectively. The obtained nanorod resistances were 432.54–304.57 MΩ at 100 °C, which suggests that the relationship between strain effects and electric current alteration was significant.
Document Type: Research Article
Publication date: 2012-03-01
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