Influence of Passivation and Solar Cell Configuration on the Electrical Parameter Degradation of Photovoltaic Modules

Izete Zanesco (), Adriano Moehlecke, Jeferson Ferronato, Moussa Ly, João Victor Zanatta Britto, Bruno Inácio da Silva Roux Leite and Taila Cristiane Policarpi
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Izete Zanesco: Solar Energy Technology Nucleus (NT-Solar), School of Technology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre 90619-900, RS, Brazil
Adriano Moehlecke: Solar Energy Technology Nucleus (NT-Solar), School of Technology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre 90619-900, RS, Brazil
Jeferson Ferronato: Solar Energy Technology Nucleus (NT-Solar), School of Technology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre 90619-900, RS, Brazil
Moussa Ly: Solar Energy Technology Nucleus (NT-Solar), School of Technology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre 90619-900, RS, Brazil
João Victor Zanatta Britto: Solar Energy Technology Nucleus (NT-Solar), School of Technology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre 90619-900, RS, Brazil
Bruno Inácio da Silva Roux Leite: Solar Energy Technology Nucleus (NT-Solar), School of Technology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre 90619-900, RS, Brazil
Taila Cristiane Policarpi: Solar Energy Technology Nucleus (NT-Solar), School of Technology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre 90619-900, RS, Brazil

Energies, 2024, vol. 17, issue 4, 1-10

Abstract: This article analyses and compares the influence of p-type Cz-Si solar cells produced with and without Al-BSF and silicon oxide passivation on the degradation of the electrical parameters of PV modules, after 77 months under operating conditions in a PV system. Solar cells were manufactured at a pilot plant-scale facility, and 32 PV modules with silicon oxide passivated emitter and Al-BSF solar cells were assembled. The other group was composed of 28 PV modules produced with n + pn + solar cells. The I–V curves of the PV modules were measured under standard test conditions before and after 77 months of exposure. In both groups, the short-circuit current presented higher degradation, and the open-circuit voltage showed low reduction. However, the degradation of these electrical parameters was lower in PV modules assembled with a passivated emitter and Al-BSF solar cells. Consequently, the power degradation rate of PV modules with passivated emitter n + pp + and n + pn + solar cells was 0.29% and 0.66% per year, respectively. The milky pattern was observed at the edge of all solar cells and was related to titanium dioxide antireflective coating modification and laser isolation processing.

Keywords: degradation rate; PV modules; silicon solar cell technology (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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