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Cloaking Principle Could Boost Solar Cell Performance

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Invisibility cloaking may be a long way from reality, but the principle could help improve the performance of solar cells in the near term. In a series of simulations, researchers at the Karlsruhe Institute of Technology have demonstrated how cloaks made of metamaterials or freeform surfaces could eliminate shadows cast by energy-harvesting components onto the active surfaces of solar cells. An invisibility cloak (right) guides sunlight past the contacts for current removal to the active surface area of a solar cell. Courtesy of Martin Schumann/Karlsruhe Institute of Technology....Read full article

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    Published: October 2015
    Glossary
    freeform optics
    Freeform optics refers to the design and fabrication of optical surfaces that do not follow traditional symmetric shapes, such as spheres or aspheres. Unlike standard optical components with symmetric and rotationally invariant surfaces, freeform optics feature non-rotationally symmetric and often complex surfaces. These surfaces can be tailored to meet specific optical requirements, offering greater flexibility in designing optical systems and achieving improved performance. Key points about...
    metamaterial
    Metamaterials are artificial materials engineered to have properties not found in naturally occurring substances. These materials are designed to manipulate electromagnetic waves in ways that are not possible with conventional materials. Metamaterials typically consist of structures or elements that are smaller than the wavelength of the waves they interact with. Key characteristics of metamaterials include: Negative refraction index: One of the most notable features of certain...
    freeform opticsResearch & TechnologyWafersEuropeGermanyKITKarlsruhe Institute of TechnologyMartin SchumannenergysolarphotovolaticcloakingOpticsmetamaterialTech Pulse

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