| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1812589 | Physica B: Condensed Matter | 2010 | 5 Pages |
Abstract
In this work, the oxygen treatment of 1 μm 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 (Ta=400 °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.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Z. Dashevsky, E. Shufer, V. Kasiyan, E. Flitsiyan, L. Chernyak,