Abstract: The present invention is in the field of a geometrically and spectrally resolved albedometer for a PV-module, a method of determining characteristics of reflected light, a method of optimizing reflected light performance of a solar cell, and a computer program for geometrically and spectrally resolving light.

Abstract: The present invention is in the field of a switching matrix for reconfigurable PV modules and systems, in order to compensate for sub-optimal functioning cells, such as due to shading, by automatically interconnecting cells and/or blocks to optimize output power of a PV-module or modules or systems.

Abstract: The present invention is in the field of a geometrically and spectrally resolved albedometer for a PV-module, a method of determining characteristics of reflected light, a method of optimizing reflected light performance of a solar cell, and a computer program for geometrically and spectrally resolving light.

Abstract: The present invention is in the field of an improved naturally ventilated façade with incorporated PV that can provide heating and ventilation and can provide electricity. Especially for buildings receiving high amounts of sunshine and in particular when such buildings need ventilation such systems can be applied advantageously.

Abstract: The invention relates to a photovoltaic cell, including at least a first junction between a pair of semiconducting regions (4-9). At least one of the pair of semiconducting regions includes at least part of a superlattice comprising a first material interspersed with formations of a second material. The formations are of sufficiently small dimensions so that the effective band gap of the superlattice is at least partly determined by the dimensions. An absorption layer (24-26) is provided between the semiconducting regions and the absorption layer comprises a material for absorption of radiation so as to result in excitation of charge carriers and is of such thickness that excitation levels are determined by the material itself.

Abstract: For military as well as for civil applications there is provided a construction element comprising a disc-shaped central part (1) with at least four legs (2) extending outwards substantially radially with respect to a transversal axis (3) of the central part (1) and having longitudinal axes arranged in a plane perpendicular to the transversal axis (3) of the central part (1). The central part (1) has a face recess (4) extending inwardly from the central part (1) periphery between two adjacent legs (2). The face recess (4) has a width corresponding to the central part thickness and a depth being equal from one to two thirds of the central part width measured along an axis (8) of the face recess (4). The central part (1) is also furnished with a first passage (5) the axis (6) of which is parallel to the transversal axis (3) of the central part (1), and with a second passage (7), opening into the central part (1) face walls and having an axis (9) perpendicular to the axis (8) of the face recess (4).