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Chemical Gradients in Cu(In,Ga)(S,Se)2 Thin-Film Solar Cells: Results of the GRACIS Project

Witte, W. and Powalla, M. and Hariskos, D. and Eicke, A. and Botros, M. and Schock, H.-W. and Abou-Ras, D. and Mainz, R. and Rodríguez-Alvarez, H. and Unold, T. and Bauer, G. H. and Brüggemann, R. and Heise, S. J. and Neumann, O. and Meessen, M. and Christen, J. and Bertram, F. and Klein, Andreas and Adler, T. and Albe, K. and Pohl, J. and Martin, M. and De Souza, R. A. and Nagarajan, L. and Beckers, T. and Boit, C. and Dietrich, J. and Hetterich, M. and Zhang, Z. and Scheer, R. and Kempa, H. and Orgis, T. (2013):
Chemical Gradients in Cu(In,Ga)(S,Se)2 Thin-Film Solar Cells: Results of the GRACIS Project.
pp. 2166-2173, [Online-Edition: http://www.eupvsec-proceedings.com/proceedings?paper=16560],
[Article]

Abstract

The German joint research project “Chemical Gradients in Cu(In,Ga)(S,Se)2” (GRACIS) is an initiative to gain a better physical understanding concerning the formation of chemical gradients in the Cu(In,Ga)(S,Se)2 (CIGS) absorber layers and at the CIGS/buffer interface. This article presents the current status of the GRACIS project after three years of execution with results concerning phase formation during chalcogenization and coevaporation processes, influence of Ga grading on structural and electrical parameters as well as on inhomogeneities on the μm scale of CIGS. Special features of the CIGS/Zn(O,S) buffer interface are discussed and compared to CIGS solar cells with CdS buffer. In addition, our experimental results are supported by 3D simulations and calculations using screened-exchanged hybrid density functional theory.

Item Type: Article
Erschienen: 2013
Creators: Witte, W. and Powalla, M. and Hariskos, D. and Eicke, A. and Botros, M. and Schock, H.-W. and Abou-Ras, D. and Mainz, R. and Rodríguez-Alvarez, H. and Unold, T. and Bauer, G. H. and Brüggemann, R. and Heise, S. J. and Neumann, O. and Meessen, M. and Christen, J. and Bertram, F. and Klein, Andreas and Adler, T. and Albe, K. and Pohl, J. and Martin, M. and De Souza, R. A. and Nagarajan, L. and Beckers, T. and Boit, C. and Dietrich, J. and Hetterich, M. and Zhang, Z. and Scheer, R. and Kempa, H. and Orgis, T.
Title: Chemical Gradients in Cu(In,Ga)(S,Se)2 Thin-Film Solar Cells: Results of the GRACIS Project
Language: English
Abstract:

The German joint research project “Chemical Gradients in Cu(In,Ga)(S,Se)2” (GRACIS) is an initiative to gain a better physical understanding concerning the formation of chemical gradients in the Cu(In,Ga)(S,Se)2 (CIGS) absorber layers and at the CIGS/buffer interface. This article presents the current status of the GRACIS project after three years of execution with results concerning phase formation during chalcogenization and coevaporation processes, influence of Ga grading on structural and electrical parameters as well as on inhomogeneities on the μm scale of CIGS. Special features of the CIGS/Zn(O,S) buffer interface are discussed and compared to CIGS solar cells with CdS buffer. In addition, our experimental results are supported by 3D simulations and calculations using screened-exchanged hybrid density functional theory.

Title of Book: EU PVSEC Proceedings
Uncontrolled Keywords: Solar Cell, Inhomogeneous, CIGS, Buffer, Ga Gradient
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science > Surface Science
Event Title: 27th European Photovoltaic Solar Energy Conference and Exhibition
Event Location: Frankfurt am Main
Date Deposited: 29 Nov 2013 08:44
Official URL: http://www.eupvsec-proceedings.com/proceedings?paper=16560
Additional Information:

Proc. 27th Europ. Photovolt. Sol. En. Conf., Frankf. (2012)

Identification Number: doi:10.4229/27thEUPVSEC2012-3BO.4.1
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