Electrophoretic Formation of Zinc Oxide Based Ntc Rsistors (RESEARCH NOTE)
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Abstract:
Fine zinc oxide particles were electrophoretically deposited on alumino-ferro-chrome substrates. The deposition was carried out in a cylindrical ZnO/acetone electrophoresis cell. The deposits were dried and sintered at 1030³C in air. The process resulted a porous polycrystalline ZnO cladding over the alloy core. Comb shaped silver electrodes were formed and fired at 350³C. The variation of device resistance vs. temperature was studied in air in the range of 100 - 250³C. The NTC of resistivity at 100³C and the activation energy of carrier generation was found to be 4.0% K-1 and 1.1eV respectively.
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Journal title
volume 13 issue 3
pages 75- 80
publication date 2000-08-01
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