Optical properties of PbTe and PbSnTe doped with Cr
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AuthorsNikolić, Pantelija M.
Paraskevopoulos, Konstantinos M.
Vujatović, Stevan S.
Nikolić, Maria Vesna
Blagojević, Vladimir D.
Bojičić, Aleksandar I.
Article (Published version)
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Single crystal samples of PbTe and PbSnTe doped with Cr were made using the Bridgman technique. Far infrared diagrams of PbTe samples doped with 0.4 at.%, 0.8 at.% and 1 at.% Cr and also of Pb0.9Sn0.1Te doped with 0.4 at.%, 0.7 at.% and 1.1 at.% Cr are presented and numerically analyzed. Local modes were determined at about 260 cm-1 and 480 cm-1 for PbTe doped with Cr and at slightly higher frequencies for PbSnTe doped with Cr. The origin of the local modes was discused about the possible application of the PbSnTe + Cr alloys. © 2009 Elsevier B.V. All rights reserved.
Keywords:optical spectroscopy / impurities in semiconductors / semiconductors
Source:Journal of Alloys and Compounds, 2009, 480, 2, 893-896