Title

Influence Of Oxygen Treatment On Transport Properties Of Pbte:In Polycrystalline Films

Keywords

Lead telluride films; Oxygen treatment; Photosensitivity

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. © 2010 Elsevier B.V. All rights reserved.

Publication Date

5-15-2010

Publication Title

Physica B: Condensed Matter

Volume

405

Issue

10

Number of Pages

2380-2384

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.physb.2010.02.048

Socpus ID

77950594510 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77950594510

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