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New Architecture towards Ultrathin CdTe Solar Cells for High Conversion Efficiency
Joint Authors
Teyou Ngoupo, A.
Zougmoré, F.
Ndjaka, J. M. B.
Ouédraogo, S.
Source
International Journal of Photoenergy
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-05
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Solar Cell Capacitance Simulator in 1 Dimension (SCAPS-1D) is used to investigate the possibility of realizing ultrathin CdTe based solar cells with high and stable conversion efficiency.
In the first step, we modified the conventional cell structure by substituting the CdS window layer with a CdS:O film having a wide band gap ranging from 2.42 to 3.17 eV.
Thereafter, we simulated the quantum efficiency, as well as the parameters of J-V characteristics, and showed how the thickness of CdS:O layer influences output parameters of Glass/SnO2/ZTO/CdS:O/CdT e 1 - x S x /CdTe/Ni reference cell.
High conversion efficiency of 17.30% has been found using CdT e 1 - x S x ( x = 0.12 ) and CdTe layers of thickness 15 nm and 4 μm, respectively.
Secondly, we introduced a BSR layer between the absorber layer and back metal contact, which led to Glass/SnO2/ZTO/CdS:O/CdT e 1 - x S x /CdTe/BSR/Ni configuration.
We found that a few nanometers (about 5 nm) of CdT e 1 - x S x layer is sufficient to obtain high conversion efficiency.
For BSR layer, different materials with large band gap, such as ZnTe, Cu2Te, and p+-CdTe, have been used in order to reduce minority carrier recombination at the back contact.
When ZnTe is used, high conversion efficiency of 21.65% and better stability are obtained, compared to other BSR.
American Psychological Association (APA)
Teyou Ngoupo, A.& Ouédraogo, S.& Zougmoré, F.& Ndjaka, J. M. B.. 2015. New Architecture towards Ultrathin CdTe Solar Cells for High Conversion Efficiency. International Journal of Photoenergy،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1066656
Modern Language Association (MLA)
Teyou Ngoupo, A.…[et al.]. New Architecture towards Ultrathin CdTe Solar Cells for High Conversion Efficiency. International Journal of Photoenergy No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1066656
American Medical Association (AMA)
Teyou Ngoupo, A.& Ouédraogo, S.& Zougmoré, F.& Ndjaka, J. M. B.. New Architecture towards Ultrathin CdTe Solar Cells for High Conversion Efficiency. International Journal of Photoenergy. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1066656
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1066656