Si-Ge whiskers for thermoelectric sensors design
| Autor: | I. Ostrovskii, A. A. Druzhinin, Yu.M. Khoverko, Natalia Liakh-Kaguy |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
seebeck coefficient Whiskers Doping whiskers chemistry.chemical_element figure of merit Atmospheric temperature range Condensed Matter Physics lcsh:QC1-999 Thermal conductivity chemistry sensor Whisker Seebeck coefficient Thermoelectric effect thermal conductivity General Materials Science Physical and Theoretical Chemistry Composite material Boron lcsh:Physics si-ge |
| Zdroj: | Фізика і хімія твердого тіла, Vol 21, Iss 3, Pp 399-403 (2020) |
| ISSN: | 2309-8589 1729-4428 |
| DOI: | 10.15330/pcss.21.3.399-403 |
| Popis: | The paper deals with studies of thermoelectric properties for Si1-xGex (x=0.01-0.05) whiskers doped with boron during their growth by CVD method. Temperature dependences of the resistance and the Seebeck coefficient for Si1-xGex whiskers were measured in the temperature range 275–550 K. A method for determination of thermoelectric parameters of the whisker was proposed with use of the whisker joints, which allows us to define a ratio of Seebeck coefficient to thermal conductivity a/k. Taking into account the obtained values of Seebeck coefficient, the whisker conductance and estimated values of thermal conductivity, parameter ZT was calculated for the whiskers and consists of 0.15 for T=200oC. The obtained value of ZT is in good coincidence with literature data for hop pressed Si-Ge nanocomposites. The humidity sensor was designed base on Si-Ge whiskers. |
| Databáze: | OpenAIRE |
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