First-principles study on the role of silicon point defects on PERC solar cell degradation

First-principles study on the role of silicon point defects on PERC solar cell degradation

One of the causes of decrease in the performance of silicon-based solar pannels is linked to light and elevated temperature induced degradation (LeTID). Even if experimental evidence shows that different defects in the bulk material of the modules are involved in the mechanisms behind LeTID, its ori...

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Bibliographic Details
Published in:2021 IEEE 48th Photovoltaic Specialists Conference (PVSC) pp. 0809 - 0813
Main Authors: Tejeda-Zacarias, Elisa, Baranek, Philippe, Vach, Holger
Format: Conference Proceeding
Language:English
Published: IEEE 20-06-2021
Subjects:
ab initio
Degradation
Hydrogen
interstitial defects
Ionization
LeTID
Microscopy
PERC modules
Photonic band gap
Photovoltaic cells
Photovoltaic systems
silicon
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Summary:One of the causes of decrease in the performance of silicon-based solar pannels is linked to light and elevated temperature induced degradation (LeTID). Even if experimental evidence shows that different defects in the bulk material of the modules are involved in the mechanisms behind LeTID, its origins remain unresolved. First-principles methods result in powerful tools to understand this degradation at the nano and microscopic levels. In the present work we propose an approach to model LeTID precursor mechanisms by using ab initio methodology.
DOI:10.1109/PVSC43889.2021.9518589