Eur. Phys. J. Appl. Phys.
Volume 27, Number 1-3, July-September 2004Tenth International Conference on Defects: Recognition, Imaging and Physics in Semiconductors (DRIP X)
|Page(s)||321 - 324|
|Published online||15 July 2004|
Manifestation of defects in phonon spectra of binary zinc-blende compounds
Institute of Physics, Rzeszow University, Rejtana 16A, 35-310
2 Instytut Fizyki im. Mariana Smoluchowskiego, Uniwersytet Jagielloński, Reymonta 4, 30-059 Krakow, Poland
3 Institute of Physics PAS, al. Lotnikow 32/46, 02-668 Warsaw, Poland
4 Laboratori Nazionali di Frascati INFN, DAFNE-L lab., C.P. 13, 00044 Frascati (RM), Italy
5 Dipartimento di Informatica, Universita degli Studi di Verona, Strada Le Grazie 15, 37134 Verona, Italy
6 Dipartimento di Fisica, Universita La Sapienza, p. le A. Moro 2, Rome, Italy
7 Dipartimento di Scienze Geologiche, Universita di Roma-3, Largo S. Leonardo Murialdo 1, 00146 Rome, Italy
Corresponding author: firstname.lastname@example.org
Accepted: 10 February 2004
Published online: 15 July 2004
It is interesting to consider the problem of the presence of defects in the semiconductor binary compounds by observing their elemental tetrahedron distortions, caused by the creation of vacancies and interstitial atoms within the tetrahedra and so on. Our model thus considers the system A(VzxZ) and (AVay)Z as composed of five defect tetrahedron configurations where A is a cation atom, Z an anion atom, Va-cation vacancy, Vz-anion vacancy. In this communication we present far IR (FIR) spectra obtained at the DAFNE facility of Laboratori Nazionali di Frascati (INFN) using its synchrotron radiation. Two samples of CdTe are considered: sample-1 was grown by the PVT technique and sample-2 using the same technique but on the basis of, polycrystalline CdTe previously purified from oxygen in hydrogen atmosphere.
PACS: 61.72.Ji – Point defects (vacancies, interstitials, color centers, etc.) and defect clusters / 61.10.Ht – X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc. / 78.30.Er – Solid metals and alloys
© EDP Sciences, 2004
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