Influence of oxygen treatment on transport properties of PbTe:In polycrystalline films
Abbreviated Journal Title
Lead telluride films; Oxygen treatment; Photosensitivity; PBS-TYPE FILMS; PHYSICAL-PROPERTIES; CONDUCTIVITY; OXIDATION; DIFFUSION; LAYERS; Physics, Condensed Matter
In this work, the oxygen treatment of 1 mu m thick n-type PbTe:In films was studied. Two main processes induced during the thermal treatment in oxygen atmosphere were identified. The inversion of the type of electrical conductivity in PbTe:In films from n- to p-type was observed after the thermal treatment in oxygen (T(a) = 400 degrees C). This effect is related to indium segregation at the film surface. The photoconductivity demonstrated in PbTe:In films after oxygen treatment is due to oxygen diffusion along the grain boundaries and the creation of potential relief, which separates electron-hole pairs at the boundaries under light illumination. (C) 2010 Elsevier B.V. All rights reserved.
Physica B-Condensed Matter
"Influence of oxygen treatment on transport properties of PbTe:In polycrystalline films" (2010). Faculty Bibliography 2010s. 83.