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A type of integrated photovoltaic system that can improve the performance of ultrathin silicon solar cells is demonstrated by synergistically exploiting light trapping nanostructures and plasmonically enhanced spectral upconversion. Ultrathin (∼8 µm) nanostructured silicon solar cells are embedded in a thin polymeric medium containing NaYF4:Yb3+,Er3+ upconversion nanocrystals coated on a nanostructured...
Epitaxially grown III–V compound semiconductors, such as gallium arsenide (GaAs), can provide superior photovoltaic (PV) performance due to many attractive material properties. However, the high cost of growing device-quality epitaxial materials has prevented their widespread adoption in terrestrial applications. In this regard, decreasing thicknesses of constituent epitaxial materials without compromising...
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