2014•Indian Journal of Science and TechnologyOpen access

Optimization of Anti-reflection Coating for Improving the Performance of GaAs Solar Cell

Ashwini Joshi Thosar

Abstract

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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Key concepts: Materials science, Anti-reflective coating, Coating, Solar cell, Reflection (computer programming), Refractive index, Reflectivity, Optoelectronics