Thermoelectric Properties of Ni-doped ZnO Synthesized by Sol-Gel Processing

doi:10.3724/SP.J.1077.2013.12696

Abstract

Abstract: Zn_1-xNi_xO nanoparticles were prepared by Sol-Gel processing. Scanning electron microscope observations indicated that nanoparticles were mainly flake structure with many honeycombed passages on the surface of nanoparticles. For the sintered samples, the solubility limit of Ni in the Zn_1-xNi_xO wurtzite structure was found to be 0.05. All doped samples showed n-type semiconducting conductivity. The increase of x led to a significant decrease in absolute value of Seebeck coefficient (|S|). Over the entire temperature range, the thermal conductivity of Zn_1-xNi_xO samples was much lower than that of bulk ZnO sample. The highest ZT (0.045) was obtained for Zn0.925Ni0.075O at 750 K.

CLC Number:

TB34

WU Zi-Hua, XIE Hua-Qing, ZENG Qing-Feng. Thermoelectric Properties of Ni-doped ZnO Synthesized by Sol-Gel Processing[J]. Journal of Inorganic Materials, 2013, 28(9): 921-924.

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