Light trapping and plasmonic effects in amorphous and microcrystalline silicon solar cells on randomly textured substrates

Jovanov, Vladislav; Palanchoke, Ujwol; Dewan, Rahul; Kurz, H.; Obermeyer, Philip; Stiebig, Helmut; Knipp, Dietmar

doi:10.1364/e2.2012.jm4b.5

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2015

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“…Backreflectors with different geometrical features [ 9 , 10 , 11 , 12 , 13 ], gratings symmetries [ 14 , 15 ], and periodic and aperiodic configurations [ 16 , 17 , 18 , 19 , 20 ] have been reported.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Light Trapping in Thin-Film Solar Cells: Impact of Modeling on Performance Prediction

et al. 2015

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We present a comparative study on numerical models used to predict the absorption enhancement in thin-film solar cells due to the presence of structured back-reflectors exciting, at specific wavelengths, hybrid plasmonic-photonic resonances. To evaluate the effectiveness of the analyzed models, they have been applied in a case study: starting from a U-shaped textured glass thin-film, µc-Si:H solar cells have been successfully fabricated. The fabricated cells, with different intrinsic layer thicknesses, have been morphologically, optically and electrically characterized. The experimental results have been successively compared with the numerical predictions. We have found that, in contrast to basic models based on the underlying schematics of the cell, numerical models taking into account the real morphology of the fabricated device, are able to effectively predict the cells performances in terms of both optical absorption and short-circuit current values.

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