Journal
MATERIALS TODAY-PROCEEDINGS
Volume 53, Issue -, Pages 299-306Publisher
ELSEVIER
DOI: 10.1016/j.matpr.2021.08.016
Keywords
Laser; Photoluminescence; Photovoltaics; Series Interconnection; Solar Module; Thin Film
Categories
Funding
- German Ministry of Education and Research (BMBF) [03XP0091, 01IO1806]
Ask authors/readers for more resources
This study investigates the use of nanosecond and picosecond laser pulses for patterning CIGSe and metal halide perovskite solar cell absorber layers. The results show that the laser pulses lead to material modification in the vicinity of the scribed lines for CIGSe, but not for perovskite absorber layers. Numerical calculations suggest that this effect is due to the lower thickness of the perovskite layer and the higher laser fluence required for perovskite ablation. The unaffected edge regions in perovskite enable a reduction of the dead area width and an increase in power conversion efficiency and fill factor.
Both nanosecond pulses and picosecond laser pulses are used for P2 patterning of chalcopyrite (Cu(In,Ga) Se-2, CIGSe) and metal halide perovskite solar cell absorber layers. For CIGSe, the range of the modified material visualized by photoluminescence imaging is significantly wider than the actual physical line-width, since energy input by the laser pulses leads to material modification in the vicinity of the scribed lines. This effect does not occur with the perovskite absorber layers, where there is no apparent influence on the edge regions. From numerical calculations of the temperature depth-profiles and the surface temperature distributions it is concluded that this effect is due to the significantly lower perovskite absorber layer thickness compared to CIGSe and the nevertheless significantly higher laser fluence required for perovskite ablation. The unaffected edge regions around the P2 line in the perovskite enabled a reduction of the dead area width in the fabrication of 3-segmented mini-modules, which could be significantly reduced from 430 to 230 mm, while increasing the aperture area power conversion efficiency and also the geometric fill factor, which could be increased up to 94.6%. (C) 2021 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available