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Optimization of Anti-reflection Coating for Improving the Performance of GaAs Solar Cell
The objective of this work is to reduce the front surface reflectivity of the GaAs solar cell by depositing AR-coating of appropriate thickness and refractive index material. We use MgO and ZnO film and optimize their thickness for minimum reflectivity. Results indicate that the reflectivity is reduced up to 4% for MgO film and 2% for ZnO film at solar spectrum wavelength range from 550 nm to 650 nm. The external efficiency of GaAs solar cell with AR-coating is increased by 31.53% and 33.09% for MgO and ZnO film respectively.
Keywords
AM1.5D Spectrum, Anti-reflection Coating, External Efficiency, Fresnel Reflection, Interference of Light
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