Experimental demonstration of a dispersive spectral splitting concentrator for high efficiency photovoltaics
| Autor: | Carlo Maragliano, Matteo Chiesa, Marco Stefancich |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
02 engineering and technology Concentrator 01 natural sciences law.invention 010309 optics chemistry.chemical_compound Optics law Photovoltaics 0103 physical sciences General Materials Science Geometrical optics business.industry Mechanical Engineering Energy conversion efficiency Spectral bands 021001 nanoscience & nanotechnology Condensed Matter Physics Design for manufacturability Lens (optics) chemistry Mechanics of Materials Optoelectronics 0210 nano-technology business Copper indium gallium selenide SOLAR CONVERSION |
| Zdroj: | MRS Advances 1 (2016): 949–955. doi:10.1557/adv.2016.98 info:cnr-pdr/source/autori:Maragliano, Carlo; Chiesa, Matteo; Stefancich, Marco/titolo:Experimental demonstration of a dispersive spectral splitting concentrator for high efficiency photovoltaics/doi:10.1557%2Fadv.2016.98/rivista:MRS Advances/anno:2016/pagina_da:949/pagina_a:955/intervallo_pagine:949–955/volume:1 |
| ISSN: | 2059-8521 |
| DOI: | 10.1557/adv.2016.98 |
| Popis: | We report the experimental demonstration of a low-cost paradigm for photovoltaic power generation that utilizes a prismatic Fresnel-like lens to simultaneously concentrate and separate sunlight into laterally spaced spectral bands. The optical element is designed using geometric optics and optical dispersion and its performance is simulated with a ray-tracing software. The device, fabricated by injection molding, suitable for large-scale mass production, is experimentally characterized. We report an average optical transmittance above 85% over the VIS-IR range and spectral separation in excellent agreement with our simulations. Finally, the system is tested with a pair of copper indium gallium selenide based solar cells. We demonstrate an increase in peak electrical power output of 160% under outdoor sunlight illumination, corresponding to an increase in power conversion efficiency of 15% relative to single-junction full-spectrum one-sun illumination. Given the ease of manufacturability and the potential of the proposed solution, we project that our design can provide a cost-effective alternative to multi-junction solar cells ready for mass production. |
| Databáze: | OpenAIRE |
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