Linear Fresnel lenses with optimized photocurrent density distribution on the surface of multi-junction solar cells

N. A. Sadchikov, A. V. Andreeva

Ioffe Institute, St. Petersburg

Abstract: A combined linear Fresnel lens with optimized photocurrent density distribution in the focal spot has been developed for use in concentrator modules for space applications. In a combined Fresnel lens, the focal lengths of each microprism are selected individually based on the proposed algorithm, which made it possible to reduce the heterogeneity in the profile of the photocurrent density distribution in the central region on the surface of InGaP/InGaAs/Ge and AlInGaP/AlInGaAs/InGaAs/Ge solar cells, as well as increase the peak values of the photocurrent density in the center of the focal spot.

Keywords: linear Fresnel lens, multi-junction solar cell, solar radiation concentrators, space solar panels.

Received: 29.07.2025
Revised: 20.08.2025
Accepted: 22.08.2025

DOI: 10.61011/PJTF.2025.22.61586.20458

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