Modulated photonic-crystal structures as broadband back reflectors in thin-film solar cells | Zendy

Janez Krč | Zendy; Miro Zeman | Zendy; S.L. Luxembourg | Zendy; Marko Topič | Zendy

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Modulated photonic-crystal structures as broadband back reflectors in thin-film solar cells

Author(s) -

Janez Krč,

Miro Zeman,

S.L. Luxembourg,

Marko Topič

Publication year - 2009

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3109781

Subject(s) - materials science , amorphous silicon , optoelectronics , reflector (photography) , silicon , photonic crystal , amorphous solid , optics , monocrystalline silicon , thin film , solar cell , broadband , silicon nitride , crystalline silicon , nanotechnology , crystallography , chemistry , physics , light source

A concept of a modulated one-dimensional photonic-crystal (PC) structure is introduced as a back reflector for thin-film solar cells. The structure comprises two PC parts, each consisting of layers of different thicknesses. Using layers of amorphous silicon and amorphous silicon nitride a reflectance close to 100% is achieved over a broad wavelength region (700–1300 nm). Based on this concept, a back reflector was designed for thin-film microcrystalline silicon solar cells, using n-doped amorphous silicon and ZnO:Al. Simulations show that the short-circuit current of the cell with a modulated PC back reflector closely resembles that of a cell with an ideal reflector.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc

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