New Thermoelectric Materials and New Applications | ||||
| Egyptian Journal of Solids | ||||
| Article 1, Volume 27, Issue 1, 2004, Page 1-7 PDF (145.7 K) | ||||
| DOI: 10.21608/ejs.2004.149301 | ||||
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| Abstract | ||||
| Thermoelectricity in general is of strong scientific and technological interest due to its application possibilities ranging from clean energy to photon sensing devices. Recent developments in theoretical studies on t he thermoelectric effects, as well as the newly discovered thermoelectric materials provide new opportunities for wide applications. One type of these materials is based on the strongly correlated electron systems; typical examples are the transition metal oxides, which were not regarded as very promising for thermoelectric applications. In this paper, we discuss some recent progress in this field, and special emphasize is on the new application of thin films grown on vicinal cut substrates. The thermoelectric effect is based on the anisotropic Seebeck components in crystals. Upon radiation of heat and/or light on the film surface, there will be an induced voltage, hence device which can detect the heat and/or light radiation can be made. We’ll show that this type of detector demonstrates novel properties: broad optical response, very fast time response and at the same time it does not need any bias, therefore it is extremely energy saving. The performance of three typical compounds YBa2Cu3O7, LaCaMnO3 and LaSrCoO3 are presented. | ||||
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