Eur. Phys. J. Appl. Phys. 27, 427-430 (2004)
https://doi.org/10.1051/epjap:2004142

Some structural aspects of Pb_xCd_1−xTe bulk material

¹ Grupo de Semiconductores Compuestos, Facultad de Química, Universidad de la República, Montevideo 11800, Uruguay
² Departamento de Física de Materiales, Universidad Autónoma de Madrid, Madrid 28049, Spain

Corresponding author: esaucedo@fq.edu.uy

Received: 4 July 2003
Accepted: 28 January 2004
Published online: 15 July 2004

Abstract

The ternary alloys Pb_xCd_1−xTe were prepared by the vertical Bridgman method and studied from a morphological viewpoint. The evolution of the different defects with the Pb concentration was described. For x = 0.20, strong segregation was found. A supercrystal structure, formed by alternated layers of CdTe and PbTe was encountered in the PbTe rich phase. We propose some hypothesis about the mechanism for their formation. An interpretation of the optical behavior in the 0.2–0.6 eV infrared region will be also presented.