Reference : Quantification of surface ZnSe in Cu2ZnSnSe4-based solar cells by analysis of the spe...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
http://hdl.handle.net/10993/16053
Quantification of surface ZnSe in Cu2ZnSnSe4-based solar cells by analysis of the spectral response
English
Colombara, Diego mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Robert, Erika mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Crossay, Alexandre mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Taylor, Aidan [Durham University > Department of Physics]
Guennou, Mael [Centre de Recherche Public Gabriel Lippmann - Luxembourg > Département Science et Analyse des Matériaux]
Arasimowicz, Monika mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Malaquias, Joao mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Djemour, Rabie mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Dale, Phillip mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Apr-2014
Solar Energy Materials & Solar Cells
Elsevier Science
123
220-227
Yes (verified by ORBilu)
International
0927-0248
Amsterdam
The Netherlands
[en] Kesterite ; Electrodeposition ; ZnSe secondary phase ; Short circuit current density ; Photocurrent spectroscopy ; EQE
[en] Absorber layers consisting of Cu2ZnSnSe4 (CZTSe) and surface ZnSe in variable ratios were
prepared by selenization of electroplated Cu/Sn/Zn precursors and completed into full devices with up to 5.6 % power conversion efficiency. The loss of short circuit current density for samples with increasing ZnSe content is consistent with an overall reduction of spectral response, pointing to a ZnSe current blocking behavior. A feature in the spectral response centered around 3 eV was identified and attributed to light absorption by ZnSe. A model is proposed to account for additional collection of the carriers generated underneath ZnSe capable of diffusing across to the space charge region. The model satisfactorily reproduces the shape of the spectral response and the estimated ZnSe surface coverage is in good qualitative agreement with analysis of the Raman spectral mapping. The model emphasizes the importance of the ZnSe morphology on the spectral response, and its consequences on the solar cell device performance.
European Commission - EC
Researchers ; Professionals ; Students
http://hdl.handle.net/10993/16053
10.1016/j.solmat.2014.01.015
http://www.sciencedirect.com/science/article/pii/S092702481400021X
FP7 ; 284486 - SCALENANO - Development and scale-up of nanostructured based materials and processes for low cost high efficiency chalcogenide based photovoltaics

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