1. Measurement of Seebeck coefficient using a light pulse.
- Author
-
Wood, C., Zoltan, D., and Stapfer, G.
- Subjects
SCIENTIFIC apparatus & instruments ,HIGH temperatures ,LASER beams ,LIGHT - Abstract
A high-temperature (1900 K) Seebeck coefficient apparatus is described in which small thermal gradients are generated in a sample by light pulses transmitted via light pipes. By employing an analog subtraction circuit, the Seebeck coefficient is displayed directly on an X-Y recorder. This technique presents a convenient, accurate, and rapid method for measuring the Seebeck coefficient in highly doped semiconductors as a function of temperature. The nature of the resulting display (X-Y recording) is a valuable tool in determining validity of the data. A straight line results (i.e., a minimum of hysteresis) only if all potential experimental errors are minimized. Under these conditions, the error of measurements of the Seebeck coefficient is estimated to be less than ± 1%. [ABSTRACT FROM AUTHOR]
- Published
- 1985
- Full Text
- View/download PDF