Far-infrared spectroscopy of PbTe doped with iron

Far infrared reflection spectra, at room and liquid nitrogen temperature, of PbTe single crystals doped with iron are presented. Plasma minima were observed at about 160 cm–1 and 180 cm–1 for room and liquid nitrogen temperature, respectively. Using the reflectivity diagrams and their minima the values of the hole concentrations and their mobility at both temperatures were calculated and compared with galvanomagnetic measurements. All these results indicated that when PbTe is doped with a small concentration of Fe, the hole concentration is reduced by one order of magnitude and the free carrier mobility is larger when compared to pure PbTe.

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Author:Pantelija Nikolić, K. Radulović, Dana Vasiljević-Radović, V. Blagojević, B. Milosavljević, Zorana Dohčević-Mitrović
ISSN:0352-5139 (Print)
ISSN:1820-7421 (Online)
Parent Title (English):Journal of the Serbian Chemical Society
Publisher:Serbian Chemical Society
Place of publication:Belgrade
Document Type:Article
Date of Publication (online):25.01.2014
Year of first Publication:2002
Tag:doping; infrared spectroscopy; iron; lead telluride; plasma
First Page:415
Last Page:423
Institutes:Institute of Technical Sciences of the Serbian Academy of Sciences and Arts
University of Belgrade, Faculty of Electrical Engineering
Mining and Metallurgy Institute Bor
open_access (DINI-Set):
Licence (English):License LogoCreative Commons - Attribution-Noncommercial-No Derivative Works 3.0 Serbia