| Issue |
EPJ Photovolt.
Volume 13, 2022
EU PVSEC 2021: State of the Art and Developments in Photovoltaics
|
|
|---|---|---|
| Article Number | 7 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/epjpv/2022003 | |
| Published online | 03 March 2022 | |
https://doi.org/10.1051/epjpv/2022003
Regular Article
DLTS investigations on CIGS solar cells from an inline co-evaporation system with RbF post-deposition treatment
1
Zentrum für Sonnenenergie- und Wasserstoffforschung Baden-Württemberg (ZSW), Meitnerstraße 1, 70563 Stuttgart, Germany
2
Light Technology Institute (LTI), Karlsruhe Institute of Technology (KIT), Engesserstraße 13, 76131 Karlsruhe, Germany
* e-mail: tim.helder@zsw-bw.de
Received:
30
June
2021
Received in final form:
16
December
2021
Accepted:
3
February
2022
Published online: 3 March 2022
In this study, Deep Level Transient Spectroscopy (DLTS) measurements have been performed on Cu(In,Ga)Se2 (CIGS) solar cells from an inline co-evaporation system. The focus of this investigation is directed on the effect of rubidium-fluoride (RbF)-post-deposition treatment (PDT) on the defects in the CIGS absorber layer. Different traps can be identified and their properties are calculated. Herein, different methods of evaluations have been used to verify the results. Specifically, one minority trap around 400 meV was found to show a significant reduction of the trap density due to the alkali treatment. In contrast, a majority trap at approximately 600 meV is unaffected.
Key words: CIGS solar cells / RbF-PDT / defects / DLTS / passivation
© T. Helder et al., Published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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