Practical Application of Spectrum Splitter
Utilizing the full solar spectrum is desirable to enhance the conversion efficiency of a solar power generator. A spectrum splitter can be used to spatially multiplex di erent solar cells that have high e ciency in mutually exclusive parts of the solar spectrum. This process is fundamentally different from a simple power divider, which merely reduces signal strength across multiple outputs. Here, we present an experimental method to spectrally split and concentrate broadband light (420–875 nm) via wavefront shaping. Photovoltaic (PV) systems are fundamentally limited by spectral mismatch between the solar spectrum and semiconductor band gaps, resulting in thermalization and transmission losses that reduce overall efficiency. This paper describes a novel light splitting device, that could solve some of the additional problems encountered by previous inventions, such as no overlap in photon frequencies, no moving parts, lightweight and lower influence by tracking errors.
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