Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Albert-ludwigs-universitat Freiburg

Adolf Goetzberger

Waldemar Greubel

Marius Peters

Jan Christoph Goldschmidt

Tabea Obergfell

Christian Reise

Georg Bopp

Philipp LÖPER

Concentrator arrangement

A solar powered electronic clock has a display, time-keeping electronics, a battery, and a solar cell array. The battery is chargeable from the solar cell array and supplies only the time-keeping electronics while the display is powered only by the solar cell array. A diode connected between the solar cell array and battery permits the battery to be recharged, but prevents the display from drawing energy from the battery.

Electronic clock with solar cell and rechangeable battery

A row of strip-shaped semiconductor junctions is arranged on each of the two surfaces of a semiconductor substrate possessing a high ohmic resistance, these junctions having p.sup.+ - and n.sup.+ -conduction characteristics in alternation and being parallel to each other and spaced at intervals, in such a way that a semiconductor junction having a p.sup.+ -conduction characteristic on one surface of the semiconductor substrate is, in each case, located opposite a semiconductor junction having an n.sup.+ -conduction characteristic on the other surface, and printed circuit tracks are arranged, in alternation, on one surface and on the other surface of the semiconductor substrate, these tracks connecting, in each case, one series of solar cell junctions with a neighboring series, in series-connection.

Integrated series-connected solar cell

The present invention provides an apparatus in which one or more light concentrators comprising thin layers of transparent solid or liquid materials with embedded fluorescent centers are combined with absorbers in order to convert solar light into heat energy at high temperatures.

Apparatus for converting light energy into heat energy by light

An apparatus for the conversion of light energy into electrical energy, by hich solar energy may be converted into electrical energy effectively and cheaply. The invention further relates to fluorescent centers (light concentrators) which consist of thin layers of transparent solid or liquid materials with embedded fluorescent centers and which in conjunction with solar cells serve to convert solar energy into electrical energy.

Growing community of inventors

Merzhausen, Germany

Adolf Goetzberger