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Absorbing one-dimensional planar photonic crystal for amorphous silicon solar cell
El Daif, Ounsi,Drouard, Emmanuel,Gomard, Guillaume,Kaminski, Anne,Fave, Alain,Lemiti, Mustapha,Ahn, Sungmo,Kim, Sihan,Roca i Cabarrocas, Pere,Jeon, Heonsu,Seassal, Christian The Optical Society 2010 Optics express Vol.18 No.suppl3
<P>We report on the absorption of a 100nm thick hydrogenated amorphous silicon layer patterned as a planar photonic crystal (PPC), using laser holography and reactive ion etching. Compared to an unpatterned layer, electromagnetic simulation and optical measurements both show a 50% increase of the absorption over the 0.38-0.75micron spectral range, in the case of a one-dimensional PPC. Such absorbing photonic crystals, combined with transparent and conductive layers, may be at the basis of new photovoltaic solar cells.</P>