Experimental study of photovoltaic performance with a spectral filtration technique

• Investigate Photovoltaic Performance with a Spectral Filtration Technique. • Simple design to improve PV performance and electrical characteristics using a solid filter instead of nanofluids. • The study covered different factors that influence a PV's properties, including irradiance, the transmittance of the filter, the impact of utilizing various solid filters, the outcome of adjusting the filter's thickness, and the impact of the air gap between PV and the filter. • This strategy will be a new way to use concentrated PV to multiply power without increasing PV temperature, increasing PV lifetime, and increasing PV efficiency. The most significant challenge in the solar energy industry is the increase in PV temperature. Typically, the wavelength range throughout the terrestrial spectrum of the sun is 250 to 2500 nm, while that of the C-Si PV has a response between 750 and 1125 nm. This implies that PV cannot harness all photons for energy production, and an abundance of photons leads to an increase in PV temperature. This paper investigates the use of filters (Acrylic 6mm), (Acrylic 2.5mm), and (Polycarbonate 1.2mm) as heat-absorbing materials and spectrum filters for C-Si PV to improve PV performance and investigates various factors that impact the electrical features of PV. The ultraviolet, visible, and near-infrared spectrophotometer is used to perform a spectroscopic investigation of the filter. Following this analysis, the filter is transparent to the C-Si PV's response range of values. It has notable absorption in the infrared and ultraviolet spectrum zones. The experimental results, obtained from testing multiple filters in various scenarios with varying air gaps and irradiance levels using a solar simulator, showed a 9% decrease in temperature when using Acrylic 6mm at an airgap of 7cm and an irradiance of 850 W/m 2 . After increasing irradiance, using an Acrylic 6mm at an airgap of 7cm enhanced power by 16% and reduced temperature by 15.8%, with CPV at 1850 W/m 2 . The results obtained reveal that this technique helps to reduce PV temperature, increases lifetime, and enhances PV performance. Using filters depends on many factors because it was noticed that the average collected electrical power of the PV is dependent on the amount of irradiance, the air gap between the filter and the PV (the filter installation method), and the filter's absorption.