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- Title
Improvement of Cd-free CIGS solar cell efficiency using triple silicon dioxide boxes as rear-passivation.
- Authors
Shirazi, Sepideh; Orouji, Ali A.; Abbasi, Abdollah; Jafari, Seyed Mohammad Hosein
- Abstract
In this work, we improve Cd-free CIGS solar cell efficiency by using triple silicon dioxide (SiO2) boxes under the CIGS layer as rear-passivation. We investigate the influence of the thicknesses, lengths, and distances of the triple SiO2 boxes from the left and right sides of the cell. By using a thin film of SiO2 for rear-passivation with a high density of negative charge, we observe significant improvements in cell performance. This approach effectively reduces rear-side contact recombination losses, leading to enhanced overall efficiency and performance of the solar cell. Consequently, the short circuit current density (Jsc) and fill factor experience an increase, leading to an overall enhancement in the solar cell's performance. The proposed CIGS solar cell in this paper has a fill factor of 82%. The efficiency of this solar cell is 25.8% while the last Cd-free CIGS solar cell manufactured in these dimensions has an efficiency of 23.3%. Also, by this idea, the thickness of the CIGS layer can be reduced. We have shown that with a reduction of the CIGS layer, the efficiency of the solar cell is still higher than the conventional solar cell. So the solar cell manufacturing costs will be reduced.
- Publication
Journal of Materials Science: Materials in Electronics, 2024, Vol 35, Issue 6, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-024-12250-y