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Related Experiment Video

Updated: Apr 30, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
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Bifacial photovoltaic micro-concentrators for space.

Rivaldo M N Pereira, Leonardo F L de Souza, Jeffrey M Gordon

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    |February 27, 2026
    PubMed
    Summary

    New micro-concentrators offer ultra-compact, high-performance solar photovoltaic (PV) power for space applications. These systems enhance bifacial cells, particularly perovskites, for efficient energy generation in cosmic environments.

    Area of Science:

    • Space engineering
    • Materials science
    • Photovoltaics

    Background:

    • Space-based solar photovoltaic (PV) power demands unique criteria like ultra-compactness and high specific power (kW/kg, kW/m³).
    • Traditional PV designs face limitations in space due to optical tolerance, fabrication, heat rejection, and radiation resilience.
    • These challenges necessitate advanced solutions, leading to the development of PV micro-concentrators.

    Purpose of the Study:

    • To present and evaluate novel ultra-compact, high-performance micro-concentrators specifically designed for bifacial solar cells.
    • To explore the application of these micro-concentrators with perovskite bifacial cells for space power generation.
    • To achieve high concentration levels (tens of suns) with generous optical tolerances suitable for space environments.

    Main Methods:

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    • Development of new ultra-compact micro-concentrator designs.
    • Evaluation of micro-concentrator performance with bifacial solar cells, focusing on perovskites.
    • Characterization of concentration levels and optical tolerances under simulated space conditions.

    Main Results:

    • The developed micro-concentrators achieve high concentration levels (tens of suns) with liberal optical tolerances.
    • Designs are optimized for ultra-compactness and high specific power (kW/kg and kW/m³).
    • The micro-concentrators can be tailored to balance light concentration between the two sides of bifacial cells.

    Conclusions:

    • Novel micro-concentrators offer a promising solution for high-performance, compact solar PV power in space.
    • These systems are particularly suitable for bifacial perovskite cells, enhancing their space application potential.
    • The tailored designs allow for optimized energy harvesting by controlling light concentration on both sides of the cells.