Abstract
An experimental setup is developed for the measurement of the Seebeck coefficient of thin wires and thin films in the temperature range of 300-650 K. The setup makes use of the integral method for measuring the Seebeck voltage across the sample. Two pointed copper rods with in-built thermocouples serve as hot and cold probes as well as leads for measuring the Seebeck voltage. The setup employs localized heating and enables easy sample loading using a spring loaded mounting system and is fully automated. Test measurements are made on a constantan wire and indium tin oxide (ITO) thin film for illustration. The Seebeck voltage obtained for constantan wire is in agreement with the NIST data for copper constantan couple with an error of 1%. The calculated carrier concentration of ITO film from the Seebeck coefficient measurement is comparable with that obtained by electrical transport measurements. The error in the Seebeck coefficient is estimated to be within 3%.
| Original language | English (US) |
|---|---|
| Article number | 024302 |
| Journal | Review of Scientific Instruments |
| Volume | 79 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2008 |
| Externally published | Yes |
Bibliographical note
Funding Information:One of the authors, S. R. Sarath Kumar, wishes to thank the financial support provided in the form of senior research fellowship by the Council of Scientific and Industrial Research, India.
ASJC Scopus subject areas
- Instrumentation