International Journal For Multidisciplinary Research

E-ISSN: 2582-2160   •   Impact Factor: 9.24

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Spatially Resolved Analysis of Light-Induced Degradation Effects on LBIC in Multicrystalline Silicon Solar Cells

Author(s) Dr. Selma AOUIDA
Country Tunisia
Abstract Light-induced degradation (LID) in silicon solar cells is one of the primary degradation mechanisms that reduces the efficiency of photovoltaic cells and modules, typically causing a performance loss of up to 10% within the first few hours of operation. This degradation is mainly attributed to the formation of boron-oxygen (B-O) complexes under sunlight exposure, which act as recombination centers and reduce the minority carrier lifetime. This study investigates the impact of LID on the photocurrent of a multicrystalline silicon solar cell generated by laser excitation at various wavelengths (985 nm, 950 nm, 878 nm, and 657 nm). This approach enables spatially resolved analysis of the LID effect across the solar cell, with laser penetration depths ranging from 2 µm to 80 µm. Our experimental results show that the degradation is more pronounced in the bulk region of the solar cell, with the photocurrent reduction reaching up to 50 µA at 985 nm and decreasing to 40 µA at 657 nm. The study of the internal and external quantum efficiency of multicrystalline silicon solar cells reveals that a degradation of ~10%-15% occurs across all wavelengths, suggesting that degradation mechanisms affect carrier collection homogeneously.
Keywords LID, LBIC, silicon solar cells, Semilab WT 2000 PVN, IQE, EQE
Field Physics > Energy
Published In Volume 8, Issue 1, January-February 2026
Published On 2026-02-10
DOI https://doi.org/10.36948/ijfmr.2026.v08i01.68498
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E-ISSN 2582-2160
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