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Raman scattering based strategies for quality control and process monitoring in electrodeposited CuIn(S,Se)2 solar cell technologies

Published online by Cambridge University Press:  31 January 2011

Jacobo Álvarez-García ,
Xavier Fontané ,
Victor Izquierdo-Roca ,
Alejandro Perez-Rodriguez ,
Joan Ramón Morante ,
Edgardo Saucedo ,
Jesús Salvador Jaime-Ferrer  and
Verónica Bermúdez
Jacobo Álvarez-García
Affiliation:
jacobo.alvarez@cric.cat, CRIC, Barcelona, Spain
Xavier Fontané
Affiliation:
xfontane@el.ub.es, Universitat de Barcelona, Barcelona, Spain
Victor Izquierdo-Roca
Affiliation:
vizquierdo@el.ub.es, Spain
Alejandro Perez-Rodriguez
Affiliation:
perez-ro@el.ub.es, Universitat de Barcelona, Barcelona, Spain
Joan Ramón Morante
Affiliation:
morante@el.ub.es, Spain
Edgardo Saucedo
Affiliation:
edgardo.saucedo@nexcis.fr, NEXCIS, Rousset, France
Jesús Salvador Jaime-Ferrer
Affiliation:
salvador.jaime@nexcis.fr, NEXCIS, Rousset, France
Verónica Bermúdez
Affiliation:
veronica.bermudez@nexcis.fr, NEXCIS, Rousset, France
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Abstract

This work reports the use of strategies based on Raman scattering for process monitoring of electrodeposited based S rich CuIn(S,Se)2 solar cells. Main vibrational modes in the Raman spectra are sensitive to features related to the crystalline quality, chemical composition and presence of secondary phases in the chalcopyrite layers, being all these features relevant for the optoelectronic properties of the final devices. Ex-situ and in-situ measurements during the electrochemical step allow the direct assessment on the formation of Se rich secondary phases which are related to the stoichiometry of the grown precursors. The analysis of the relative intensity of the spectral contribution from these phases allows early detection of deviations of precursor stoichiometry in relation to the optimum composition range in terms of solar cell efficiency. The applicability of the technique for the in-situ monitoring of the electrodeposition process is also discussed

Keywords

Raman spectroscopyII-VIelectrodeposition
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1165: Symposium M – Thin-Film Compound Semiconductor Photovoltaics–2009 , 2009 , 1165-M02-03
Copyright
Copyright © Materials Research Society 2009

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