2018•Unpublished venueRequires access

Influence of Light Concentration on Performance of Thin Film GaAs Solar Cells on Flexible Metal Substrates

Kumaran Selva, Devendra Khatiwada, Monika Rathi, Pavel Dutta

Abstract

The influence of light concentration from 1 sun to 10 suns on the open circuit voltage, short circuit current density, fill factor and conversion efficiency of GaAs photovoltaics fabricated on flexible metal substrates has been investigated. The open circuit voltage and short circuit current density increase Logarithmically and Linearly respectively with light concentration whereas the fill factor decreases mildly. Overall, the conversion efficiency increases slightly to 7% at 10 sun concentration. The series resistance of the GaAs cells on metal substrates is found to decrease with increasing light concentration but the power loss increases about 12 times from 1 sun to 10 suns.

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Key concepts: Suns in alchemy, Energy conversion efficiency, Materials science, Current density, Short circuit, Open-circuit voltage, Equivalent series resistance, Optoelectronics