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<p>Pollution free energy resources will be the futuristic world demand which can satisfy the energy needs without causing greenhouse effect. Solar energy can be utilised as useful electrical and heat energy. With the aid of solar cells, solar energy can be converted into useful electrical energy. Crystalline silicon solar cells are considered one of the most promising technologies for efficient solar energy conversion. The output performance of solar cells also depend on front surface, backsheet and overall encapsulant surfaces. Among those, backsheet plays a vital role in redirecting the solar light back into the solar cell due to its higher reflectance. Backsheet also acts as barrier for moisture to enter into the different layers of solar cells. In this research, fabrication of backsheets comprising polylactic acid (PLA) and its composites blended with titanium dioxide (TiO<sub>2</sub>) and aluminium oxide (Al<sub>2</sub>O<sub>3</sub>) in varying proportions using Fused Filament Fabrication (FFF) process. The fabricated backsheets were evaluated for their thermal, optical, surface and behavioural studies through TGA, XRD, AFM and FESEM with EDAX characterisation techniques. Among all the samples, the SL5 specimen, containing 94 wt% PLA, 3 wt% TiO<sub>2</sub>, and 3 wt% Al<sub>2</sub>O<sub>3</sub>, demonstrated superior performance of 22.8% with maximum reflectance of 95.21% and minimum absorbance of 4.79%. The mechanical studies show that SL5 specimen achieves the maximum tensile strength of 80.5&#xa0;MPa, flexural strength of 122&#xa0;MPa and impact strength of 3.78 KJ/m<sup>2</sup>. The findings from the investigations demonstrated that the utilization of PLA, Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> can be a suitable backsheet material for boosting the performance of silicon photovoltaic cells.</p>

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Fused filament fabrication of high-reflectance PLA-TiO2-Al2O3 composite backsheets for enhanced silicon solar cell power conversion efficiency

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • Mohamad Reda A. Refaai

摘要

Pollution free energy resources will be the futuristic world demand which can satisfy the energy needs without causing greenhouse effect. Solar energy can be utilised as useful electrical and heat energy. With the aid of solar cells, solar energy can be converted into useful electrical energy. Crystalline silicon solar cells are considered one of the most promising technologies for efficient solar energy conversion. The output performance of solar cells also depend on front surface, backsheet and overall encapsulant surfaces. Among those, backsheet plays a vital role in redirecting the solar light back into the solar cell due to its higher reflectance. Backsheet also acts as barrier for moisture to enter into the different layers of solar cells. In this research, fabrication of backsheets comprising polylactic acid (PLA) and its composites blended with titanium dioxide (TiO2) and aluminium oxide (Al2O3) in varying proportions using Fused Filament Fabrication (FFF) process. The fabricated backsheets were evaluated for their thermal, optical, surface and behavioural studies through TGA, XRD, AFM and FESEM with EDAX characterisation techniques. Among all the samples, the SL5 specimen, containing 94 wt% PLA, 3 wt% TiO2, and 3 wt% Al2O3, demonstrated superior performance of 22.8% with maximum reflectance of 95.21% and minimum absorbance of 4.79%. The mechanical studies show that SL5 specimen achieves the maximum tensile strength of 80.5 MPa, flexural strength of 122 MPa and impact strength of 3.78 KJ/m2. The findings from the investigations demonstrated that the utilization of PLA, Al2O3 and TiO2 can be a suitable backsheet material for boosting the performance of silicon photovoltaic cells.