Mr. Mehran Rafiee Profile

Mehran Rafiee

at Trinity College Dublin

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Proceedings Article | 23 February 2017 Paper

Application of concentrating plasmonic luminescent down-shifting layers for photovoltaic devices

H. Ahmed, M. Rafiee, S. Chandra, A. Sethi, S. McCormack

Proceedings Volume 10099, 100991A (2017) https://doi.org/10.1117/12.2252575

KEYWORDS: Photovoltaics, Plasmonics, Photons, Solar energy, Nanoparticles, Composites, Solar cells, Silver, Absorption, External quantum efficiency, Luminescence

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In this paper, concentrating structures of plasmonic luminescent downshifting composite layers (c-pLDS) containing lumogen yellow dye and silver nanoparticles (Ag NPs) to increase the efficiency of Photovoltaic (PV) devices were investigated. The c-pLDS structures allowed for a wider absorption range of both wavelength shifting and light concentration with a strong energy transfer that red shifts photons to wavelengths which gives greater spectral response of solar cells. The optimum dye concentration in a poly(methyl,methacrylate) polymer of a thin layer ~10μm spin coated on glass substrate was established. Subsequently, plasmonic coupling with Ag NPs was introduced for the c-pLDS composite structures. Plasmonic coupling has been observed to produce fluorescence emission enhancement of up to 20% for the dye c-pLDS layer. The c-pLDS layer was modelled for CdTe mini modules (15x15 cm) and compared with a blank PMMA/GLASS and dye c-LDS structure. It has been demonstrated that the addition of c-pLDS layers containing lumogen yellow dye increases the optical efficiency and the Short circuit current (Jsc) of CdTe solar cells. An increase of 7.3% in the optical efficiency has been achieved and a 30% in the J_sc was obtained when a c-pLDS composite layer is used.

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