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Theoretical Nanoscience for Laser and Optoelectronic Devices, Department ofPhysics, College of Education (A Simple Theoretical Model for Thermoelectric Cooling of Bi2Te3 and Its Alloys Devices | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 23, Issue 4, 2012, Pages 41-52 | ||
| Author | ||
| M.C. Abdulrida | ||
| Abstract | ||
| Optimum values of material parameters and the figure of merit (Z) for p-type and n-type Bi2Te3 and its alloys (Bi2Te3 – Sb2Te3 p-type and Bi2Te3 – Bi2S3 n-type) have been determined. It is found that the results are in agreement with experimental published data for these materials and its alloys. Also, it is found that in spite of the great success for this material, it is still not able to cover all different applications owing to its small figure of merit. Based on a simple theoretical model and by optimizing the geometrical dimensions with employing the calculated material parameters values, a single stage thermoelectric refrigerator for working either under maximum cooling power or maximum coefficient of performance has been designed. In both cases, the most important device parameters have been determined for different temperatures. It is found that there is no limit on the cooling power amount that can be getting from a thermoelectric refrigerator and that the alloys always have better performance than the pure compound alone. | ||
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