Reference : Electrical Characterization of Defects in Cu-Rich Grown CuInSe2 Solar Cells

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	Focus Areas :	Physics and Materials Science
	To cite this reference:	http://hdl.handle.net/10993/27030

Title :	Electrical Characterization of Defects in Cu-Rich Grown CuInSe2 Solar Cells
Language :	English
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 >]
Publication date :	Mar-2016
Journal title :	IEEE Journal of Photovoltaics
Publisher :	IEEE
Volume :	6
Issue/season :	2
Pages :	546-551
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	2156-3381
e-ISSN :	2156-3403
City :	Piscataway
Country :	NJ
Keywords :	[en] 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.
Funders :	Fonds National de la Recherche - FnR
Target :	Researchers ; Students
Permalink :	http://hdl.handle.net/10993/27030
DOI :	10.1109/JPHOTOV.2015.2508239
Other URL :	http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=7369953&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel7%2F5503869%2F5986669%2F07369953.pdf%3Farnumber%3D7369953
FnR project :	FnR ; FNR1202492 > Susanne Siebentritt > CURI > Cu rich absorbers for highly efficient CIGS solar cells > 01/07/2012 > 30/06/2015 > 2011

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