Article (Scientific journals)
Electrical Characterization of Defects in Cu-Rich Grown CuInSe2 Solar Cells
Bertram, Tobias; Deprédurand, Valérie; Siebentritt, Susanne
2016In IEEE Journal of Photovoltaics, 6 (2), p. 546-551
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Keywords :
admittance measurement; capacitance measurement; photovoltaic (PV) cells; thin-film PV device properties and modeling
Abstract :
[en] We study defects in CuInSe2 (CIS) grown under Cu-excess. Samples with different Cu/In and Se/metals flux ratios were characterized by thermal admittance spectroscopy (TAS), capacitance-voltage measurements (CV) and temperature dependent current voltage measurements (IVT). All samples showed two different capacitance responses, which we attribute to defects with energies around 100 and 220 meV. Plus the beginning of an additional step that we attribute to a freeze-out effect. By application of the Meyer-Neldel rule, the parameters of the two defects can be assigned to two different groups, both lying within the energy region of the so-called ‘N1-defect’ that has been observed for Cu-poor absorbers.
Disciplines :
Physics
Author, co-author :
Bertram, Tobias ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Deprédurand, Valérie;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Siebentritt, Susanne ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
External co-authors :
no
Language :
English
Title :
Electrical Characterization of Defects in Cu-Rich Grown CuInSe2 Solar Cells
Publication date :
March 2016
Journal title :
IEEE Journal of Photovoltaics
ISSN :
2156-3403
Publisher :
IEEE, Piscataway, United States - New Jersey
Volume :
6
Issue :
2
Pages :
546-551
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
FnR Project :
FNR1202492 - Cu Rich Absorbers For Highly Efficient Cigs Solar Cells, 2011 (01/07/2012-30/06/2015) - Susanne Siebentritt
Funders :
FNR - Fonds National de la Recherche [LU]
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