Akademik Veri Yönetim Sistemi
MSNG-2025, 12th International Conference on Materials Science and Nanotechnology for Next Generation, Sivas, Türkiye, 10 - 12 Eylül 2025, ss.19-23, (Tam Metin Bildiri)
In this study, a Fresnel lens-based concentrated photovoltaic (CPV) module employing GaInP/GaAs/Ge triple-junction semiconductor solar cells was designed and evaluated, with particular emphasis on the development of cell receivers. With the depletion of fossil fuels and the growing impact of environmental challenges, the efficient utilization of solar energy is regarded as a crucial step toward sustainable energy production. Within this context, the development of high efficiency semiconductor-based solar cells is considered highly significant. Multi-junction III–V cells (GaInP/GaAs/Ge) show higher efficiencies than Si-based cells. A 144-cell CPV panel was fabricated using Fresnel lenses, through which concentrated solar irradiation was directed onto the cells. Aluminum-based receivers were developed, and additional receivers coated with Au, Ag, and Ni were manufactured to assess oxidation under normal atmospheric conditions. Thermal simulations were carried out using SolidWorks, while spectral response and current–voltage measurements were performed experimentally. The triple-junction cells exhibited an open-circuit voltage of 3.1 V, a short-circuit current of 110 mA, and a fill factor exceeding 85%. Long-term outdoor testing indicated that the average panel efficiency remained at ~28%, with oxidation-related efficiency degradation under atmospheric exposure limited to 0.1% over four years. The Fresnel lens structure was found to ensure precise light concentration, while the developed receiver design provided effective passive cooling, preventing thermal losses and structural degradation. In conclusion, the integration of GaInP/GaAs/Ge semiconductor-based triple-junction cells with Fresnel lens concentrators and optimized cell receivers was shown to enable the efficient use of solar energy, while ensuring high efficiency, long-term stability, and cost-effectiveness in next-generation CPV applications.