Carrier transport mechanisms in polycrystalline sandwich structures p+-PbTe/p-CdTe/p+-PbTe - A. V. Sukach; V. V. Tetorkin; A. I. Tkachuk; A. T. Voroshchenko; Yu. Kravetskyi; I. H. Lutsyshyn (Optoelectronics and Semiconductor Technique, 2013)