Volume 14, 2023
|Number of page(s)||7|
|Section||High Efficiency Materials and Devices - New concepts|
|Published online||06 July 2023|
Edge passivation of shingled poly-Si/SiOx passivated contacts solar cells
Univ. Grenoble Alpes, CEA, Liten, Campus Ines, 73375 Le Bourget du Lac, France
2 Aix Marseille Université, Université de Toulon, CNRS, IM2NP, Marseille, France
* e-mail: firstname.lastname@example.org
Received in final form: 11 May 2023
Accepted: 2 June 2023
Published online: 6 July 2023
This work aims at the full recovery of efficiency losses induced by shingling double-side poly-Si/SiOx passivated contacts crystalline silicon solar cells. It focuses on thermally-activated Aluminium Oxide (AlOx) layers elaborated by thermal Atomic Layer Deposition (ALD) to passivate the edges of shingled cells cut by using the innovative “45° tilt squaring approach”. The whole procedure featuring high-temperature AlOx annealing led to very low cut-related performance losses. Indeed, the efficiency and FF of the passivated shingled cells surpassed the values obtained for the as-cut shingles by 0.5%abs and 2.6%abs, respectively. Approaches for further improvements are also discussed, particularly to overcome the short-circuit current density decrease observed for passivated shingles.
Key words: Shingle solar cell / passivated contacts / edge passivation / AlOx / high temperature
© F. Dhainaut et al., Published by EDP Sciences, 2023
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