title: Light-confining cavities for photovoltaic applications based on the angular-spatial limitation of the escaping beam.
abstract: Integrating spheres are proposed as light-confining cavities for enhancing the absorption of light by devices such as solar cells, and also for making photovoltaic converters with cells of several band gaps. A new concept for achieving this light confinement by angular restriction of the escaping of rays, which avoids the requirement of having a small entry aperture and therefore concentrations on it that are much higher than those required on the solar cells, is proposed here.
authors: J C
authors: JC
authors: Miñano
authors: A
authors: A
authors: Luque
authors: I
authors: I
authors: Tobías