Temperature Dependence of the Exciton Gap in Monocrystalline CuGaS2

Levcenco, S. and Doka, S. and Tezlevan, V. and Fuertes Marrón, David and Kulyuk, L. and Schedel Niedrig, T. and Lux Steiner, M. Ch. and Arushano, E. (2010). Temperature Dependence of the Exciton Gap in Monocrystalline CuGaS2. "Physica B: Physics of Condensed Matter", v. 405 (n. 117); pp. 3547-3550. ISSN 0167-2789. https://doi.org/10.1016/j.physb.2010.05.037.

Description

Title: Temperature Dependence of the Exciton Gap in Monocrystalline CuGaS2
Author/s:
  • Levcenco, S.
  • Doka, S.
  • Tezlevan, V.
  • Fuertes Marrón, David
  • Kulyuk, L.
  • Schedel Niedrig, T.
  • Lux Steiner, M. Ch.
  • Arushano, E.
Item Type: Article
Título de Revista/Publicación: Physica B: Physics of Condensed Matter
Date: September 2010
ISSN: 0167-2789
Volume: 405
Subjects:
Freetext Keywords: Chalcopyrite; Photoluminescence Spectroscopy
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Single crystals of CuGaS2 have been grown by chemical vapour transport. Their near-band gap photoluminescence properties were investigated in the temperature range of 10-300 K. The variation of the exciton gap energy with temperature was studied by means of a three-parameter thermodynamic model, the Einstein model and the Pässler model. Values of the band gap at T=0 K, of a dimensionless constant related to the electron-phonon coupling, and of an effective and a cut-off phonon energy have been estimated. It has also been found that the major contribution of phonons to the shift of Eg as a function of T in CuGaS2 is mainly from optical phonons.

More information

Item ID: 8082
DC Identifier: http://oa.upm.es/8082/
OAI Identifier: oai:oa.upm.es:8082
DOI: 10.1016/j.physb.2010.05.037
Official URL: http://www.sciencedirect.com/science/article/pii/S0921452610005107
Deposited by: Memoria Investigacion
Deposited on: 18 Aug 2011 09:55
Last Modified: 20 Apr 2016 16:59
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