Possibility of Thermoelectric Oxide for Thermal Sensors

Abstract:

The thermoelectric effects in oxide materials are developed to the Seebeck effect for thermal sensing. Thermal sensors are the thermal converters, in which an electrical, magnetic, mechanical, radiation, chemical signal are measured by converting it into heat and measuring the resulting temperature changes in the device. This proposes an analysis the electrical converters and radiation sensors by using single−junction of p−Ca₃Co₄O₉ and n−CaMnO₃ materials are presented into possible thermal sensing. Several thermal converters are measured the signal electrical resistivity, and Seebeck coefficient depended on temperature. Thermal radiation sensors are included the sensitivity, electricity, and specific detectivity. For application, thermoelectric oxide cell can be fabricated crowbar circuit for protection an overvoltage condition of a power supply which it yield 1.2 s turn off switch.

• Periodical: Key Engineering Materials (Volumes 675-676)
• Pages: 601-606
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.675-676.601
• Online since: January 2016
• Authors: Tosawat Seetawan*
• Keywords: Thermal Converters, Thermal Radiation Sensors, Thermoelectric Effect, Thermopile Sensors

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