Speaker
Description
Sb$_2$Se$_3$ is a promising absorber material for photovoltaic applications due to its band-gap value (~ 1.2 eV), strong optical absorption, simple phase and composition, and earth-abundant and non-toxic constituents, reasons why Sb$_2$Se$_3$ has emerged as a potential candidate to be incorporated as high-efficiency and low-cost absorber material in thin film solar cell technology. The Sb$_2$Se$_3$ based solar cells has the possibility of its cells being interconnected in series by the laser scribing technique using 3 laser scribes steps called P1, P2 and P3 that are carried out in a sequential process by depositing each of the thin films that constitute the cell solar.
In this work, the P1 and P2 laser scribes steps were implemented in the structure glass/SnO2:F/Sb$_2$Se$_3$ using a 532 nm pulsed laser. Parameters such as laser energy, pulse repetition frequency and spot overlap percentage were optimized to obtain suitable channels for the electrical interconnection of Sb$_2$Se$_3$ solar cells. The resulting laser scribes were evaluated by optical microscopy, UV-VIS spectroscopy, profilometry, composition analysis and electrical conductivity measurements, thus validating the quality of the P1 and P2 processes.
This work was supported by
Projects: SIP-20241969 and SIP-20242054 from National Polytechnic Institute.
Reference
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| Keywords | Sb2Se3, P2 laser scribing steps, 532 nm laser, solar cells. |
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| Author approval | I confirm |
| Author will attend | I confirm |
