New physical principles of contact thermoelectric cooling
  We suggest a new approach to the theory of the contact thermoelectric cooling (Peltier effect). The metal-metal, metal-n-type semiconductor, metal-p-type semiconductor, p-n junction contacts are analyzed. Both degenerate and non-degenerate electron and hole gases are considered. The role of recombination in the contact cooling effect is discussed by the first time. 
Yu. G. Gurevich, G. N. Logvinov, O. Yu. Titov, J. Giraldo