The effect of Ag concentration on the structural, electrical and thermal transport behavior of Pb:Te:Ag:Se mixtures and improvement of thermoelectric performance via Cu doping
J. Capps, B. Ma, T. Drye, C. Nucklos, S. Lindsey, D. Rhodes, Q. Zhang, K.A. Modic, S. Cawthorne, F. Drymiotis, Journal of Alloys and Compounds 509 (2011) 1544–1549.