SEEBECK COEFFICIENT AND ELECTRICAL-CONDUCTIVITY IN SI-GE ALLOYS

Various parameters have been used to define the thermoelectric worth o f a material. Depending upon the temperature range of operation variou s materials have been investigated and;their performance is maximized with reference to variation in doping level, alloy disorder, grain siz e and nature of carrier scattering. A study of the variation of the Se ebeck coefficient with electrical conductivity provides some interesti ng insight into thermoelectric performance of the material. These para meters may provide an alternative scheme to categorise thermoelectric materials.