29 Oct '12, 5pm

Next-generation antireflection coatings could improve #solar photovoltaic cell efficiency

“Optical thin-film materials with a refractive index as low as 1.05 have been demonstrated. Tunable-refractive-index materials are based on ‘nanoporous’ silicon dioxide (SiO2), indium-tin oxide (ITO), and titanium dioxide (TiO2), and we can precisely control porosity by using oblique-angle deposition – a technique in which the substrate is at non-normal angle of incidence with respect to the deposition source,” says Schubert. Schubert and colleagues used these materials to design and fabricate a four-layer antireflection coating. “The fabrication process of this coating is additive and purely physical, so it’s fully compatible with current manufacturing processes of solar cells,” he notes. “Our customizable approach readily lends itself to the incorporation of antireflection coating design into solar cell device structures for application-specific requirements.”

Full article: http://greenbuildingelements.com/2012/10/29/next-generati...

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