Lattice absorption of Be-containing semiconductor alloys determined by spectroscopic ellipsometry
Corresponding Author
A. A. Wronkowska
Institute of Mathematics and Physics, University of Technology and Life Sciences, Kaliskiego 7, 85796 Bydgoszcz, Poland
Phone: +48 52 340 86 63, Fax: +48 52 340 86 43Search for more papers by this authorŁ. Skowroński
Institute of Mathematics and Physics, University of Technology and Life Sciences, Kaliskiego 7, 85796 Bydgoszcz, Poland
Search for more papers by this authorA. Wronkowski
Institute of Mathematics and Physics, University of Technology and Life Sciences, Kaliskiego 7, 85796 Bydgoszcz, Poland
Search for more papers by this authorŁ. Zieliński
Institute of Mathematics and Physics, University of Technology and Life Sciences, Kaliskiego 7, 85796 Bydgoszcz, Poland
Search for more papers by this authorF. Firszt
Institute of Physics, Nicholas Copernicus University, Grudzia¸dzka 5, 87100 Toruń, Poland
Search for more papers by this authorA. Marasek
Institute of Physics, Nicholas Copernicus University, Grudzia¸dzka 5, 87100 Toruń, Poland
Search for more papers by this authorW. Paszkowicz
Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/34, 02668 Warszawa, Poland
Search for more papers by this authorH. Arwin
Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden
Search for more papers by this authorCorresponding Author
A. A. Wronkowska
Institute of Mathematics and Physics, University of Technology and Life Sciences, Kaliskiego 7, 85796 Bydgoszcz, Poland
Phone: +48 52 340 86 63, Fax: +48 52 340 86 43Search for more papers by this authorŁ. Skowroński
Institute of Mathematics and Physics, University of Technology and Life Sciences, Kaliskiego 7, 85796 Bydgoszcz, Poland
Search for more papers by this authorA. Wronkowski
Institute of Mathematics and Physics, University of Technology and Life Sciences, Kaliskiego 7, 85796 Bydgoszcz, Poland
Search for more papers by this authorŁ. Zieliński
Institute of Mathematics and Physics, University of Technology and Life Sciences, Kaliskiego 7, 85796 Bydgoszcz, Poland
Search for more papers by this authorF. Firszt
Institute of Physics, Nicholas Copernicus University, Grudzia¸dzka 5, 87100 Toruń, Poland
Search for more papers by this authorA. Marasek
Institute of Physics, Nicholas Copernicus University, Grudzia¸dzka 5, 87100 Toruń, Poland
Search for more papers by this authorW. Paszkowicz
Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/34, 02668 Warszawa, Poland
Search for more papers by this authorH. Arwin
Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden
Search for more papers by this authorAbstract
Lattice absorption of Zn1–x –y Bex Mgy Se and Cd1–x –y Bex Zny Se mixed crystals grown by a high pressure Bridgman method has been investigated by infrared spectroscopic ellipsometry in the wave number range from 230 cm–1 to 5000 cm–1. Ellipsometric spectra of Cd1–x –y Bex Zny Se crystals display features in the spectral range 350–550 cm–1 associated with BeSe-type phonon modes. In the optical spectra of Zn1–x –y Bex Mgy Se crystals both BeSe-type and MgSe-type lattice absorption bands are detected. The MgSe-like modes are located at approximately 300 cm–1. The frequencies and oscillator strengths of optical phonon modes depend strongly on the alloy composition. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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