Electrotechnical Model of Conductivity of Lead Telluride, Obtained by Method of Powder Pressing

Abstract

The results of study of thermoelectric properties of lead telluride obtained by method of powder pressing arepresented. A modified electrical model for interpreting the empirical dependences σ (T) is proposed, according towhich the compressed sample is represented by a system of crystallites with intergranular boundaries whoseproperties differ along and across the compression axis.Keywords: Lead telluride, doping, pressing, thermoelectric figure of merit.