Version 1
: Received: 23 November 2023 / Approved: 27 November 2023 / Online: 27 November 2023 (11:51:53 CET)
How to cite:
Li, T.; Ho, J.; Yu, D.; Chang, J.; Ho, J. The Overall-Efficiency Improvement of Flexible CIGSe Solar Cells by Two-Segment Process. Preprints2023, 2023111694. https://doi.org/10.20944/preprints202311.1694.v1
Li, T.; Ho, J.; Yu, D.; Chang, J.; Ho, J. The Overall-Efficiency Improvement of Flexible CIGSe Solar Cells by Two-Segment Process. Preprints 2023, 2023111694. https://doi.org/10.20944/preprints202311.1694.v1
Li, T.; Ho, J.; Yu, D.; Chang, J.; Ho, J. The Overall-Efficiency Improvement of Flexible CIGSe Solar Cells by Two-Segment Process. Preprints2023, 2023111694. https://doi.org/10.20944/preprints202311.1694.v1
APA Style
Li, T., Ho, J., Yu, D., Chang, J., & Ho, J. (2023). The Overall-Efficiency Improvement of Flexible CIGSe Solar Cells by Two-Segment Process. Preprints. https://doi.org/10.20944/preprints202311.1694.v1
Chicago/Turabian Style
Li, T., Jen-Chuan Chang and Jyh-Jier Ho. 2023 "The Overall-Efficiency Improvement of Flexible CIGSe Solar Cells by Two-Segment Process" Preprints. https://doi.org/10.20944/preprints202311.1694.v1
Abstract
In this paper, the overall performance of Cu-(In,Ga)-Se2 (CIGSe) solar cells was improved in the ultraviolet (UV)–visible wavelength region by two-segment process. In which, adjusting DC sputtering powers (20–40 W) for absorbers (segment I), and metal-alloy compositions (CdS, ZnO/CdS, ZnMgO/CdS and ZnMgO) for buffers (segment II) were explored and characterized. Upon choosing the optimal-30-W CIGSe-absorber (with 0.95-CGI ratio) sputtered by the segment-I process, the Cu-rich film can distinctly boost grain growth, thus reducing the trap state density. After segment-II process as the toxic-CdS alternative, the optimal Zn0.9Mg0.1O-alloy buffer can reach the best conversion efficiency (η = 8.70%) was attained for the environmental protection. Meanwhile, and the overall internal/external quantum efficiencies (IQE/EQE) were improved by 13.15%, respectively for the 2.48–3.62-eV bandgap (short wavelength) range. The developed photovoltaic (PV) module (with 9 optimum-CIGSe cells) exhibits acceptable stability with a variance within ±5% over the 60-day experiment. This discovery in PV-device research contributes to a new scientific understanding of renewable energy. Furthermore, this study undeniably enhances the progress of practical applications for PV-modules in alignment with sustainable development goals. It also actively supports the development of eco-friendly communities.
Keywords
Cu-(In,Ga)-Se2 (CIGSe) solar cells; Two-segment process; Metal-alloy compositions; Internal/External quantum efficiencies (IQE/EQE); Sustainable development goal; Eco-friendly community
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
