The present invention relates to a colored tandem solar cell module, and more particularly, a high-efficiency thin-film colored tandem solar cell module which does not require separate photocurrent matching, implements a color without a separate color filter, and generates power with high efficiency. According to the present invention, it is possible to provide a colored tandem solar cell module including solar cells, which each include a bottom electrode having an inverse diode structure formed by sequentially stacking a first electrode, a first semiconductor layer, a second semiconductor layer, and a second electrode on a substrate, a light absorption layer formed on the bottom electrode, and a top electrode formed on the light absorption layer, thereby eliminating the need for photocurrent matching, implementing a color without a separate color filter, and improving efficiency.

A double-sided light-concentrating solar apparatus and system. The apparatus comprises a front-side concentrating groove (110), a back-side concentrating groove (110′), and a photovoltaic panel (120) provided at the bottom of each concentrating groove. Each concentrating groove comprises two groove walls (111, 112; 111′, 112′) extending along the bottom; opposite surfaces of the two groove walls are reflecting surfaces; the open side of each of the two groove walls forms an opening of the concentrating groove; the opening direction of the front-side concentrating groove (110) is opposite to the opening direction of the back-side concentrating groove (110′). According to the double-sided concentrating solar device, sunlight (LL) can be concentrated and received from two different directions, thereby enhancing direction adaptability and expanding device mounting methods.

One or more techniques, alone or in combination, maximize a surface area of a receiver that converts light into another form of energy. One technique enhances collection efficiency by controlling a size, shape, and/or position of a cell relative to an expected illumination profile under various conditions. Another technique positions non-active elements (such as electrical contacts and/or interconnects) on surfaces likely to be shaded from incident light by other elements of the receiver. Another technique utilizes embodiments of interconnect structures occupying a small footprint. The receiver may be cooled by exposure to a fluid such as water or air.

An energy harvesting electro-optic display is disclosed comprising a photovoltaic cell that converts part of the incident light to electric current or voltage, wherein the electric current or voltage is used for the operation of the electro-optic display upon the conversion or stored in a storage component to be used for the operation of the display

This invention relates to a photovoltaic module intended to convert solar radiation energy in electricity, and, more specifically, to a concentrating photovoltaic module provided with a parabolic dish-shaped mirror and a small-size photovoltaic receiver positioned in the focal plane of this parabolic dish-shaped mirror and the focal spot is overlapped mostly by the photovoltaic receiver. The photovoltaic module is based on usage of combination of a two-phase thermosiphon, which includes a flexible sub-section designed as a bellows, with the parabolic dish-shaped mirror installed on the distal (lower) sub-section of the two-phase thermosiphon by the truss struts. A tracking manipulator is installed below the parabolic dish-shaped mirror and joined with a certain spot of a supporting structure of the parabolic dish-shaped mirror; it provides orientation of the axis of the dish-shaped mirror towards the sun.

A solar cell comprising an epitaxial sequence of layers of semiconductor material thrilling at least a first and second solar subcells; a semiconductor contact layer disposed on the bottom surface of the second solar subcell; a reflective metal layer disposed below the semiconductor contact layer such that the reflectivity of the reflective metal layer is greater than 80% in the wavelength range 850 to 2000 nm, for reflecting light back into the second solar subcell.

A luminescent optical device based on a luminescent solar collector, LSC, is disclosed. In addition to components forming a LSC for generating electrical energy from solar energy, the luminescent optical device also includes a light source, and optionally one or more sensors, both electrically connected to an energy storage device of the LSC. Under the control of a control unit, the light source may emit light of different wavelengths, for example in response to environmental data measured by the sensor, thereby exciting respective domains containing luminescence material to emit light of different colours. The luminescent optical device may function as a standalone and fully integrated device that is capable of harvesting energy, illuminating itself and displaying various content conveniently and flexibly, for various purposes.

A transmitter of a wireless power transfer and data communication system comprising a transmitter system including a transmitter housing, one or more high-power laser sources, a laser controller, one or more low-power laser sources, one or more photodiodes, a beam steering system and lens assembly, and a safety system. High-power and low-power beams are directed to corresponding receivers and transceivers of a transceiver system inside a remote receiver system by the controller and the beam steering system and lens assembly. Low-power beams include optical communication to the transceiver system. The photodiodes of the transmitter system receive optical communication from the transceiver system. Low-power beams are co-propagated with and in close proximity to high-power beams substantially along an entire distance between the transmitter housing and the receiver system. The safety system instructs the controller to reduce the high-power sources in response to detected events.

Described herein is a photovoltaic module, which includes PV cells capable of converting light incoming from a front side and from a rear side (3) and a transparent rear side including a rear surface carrying a structured layer (9), where the lower surface of the structured layer (9) is the lower surface of the module, and where the surface of layer (9) is structured by parallel V-shaped grooves of depth h2 or less than h2, where the lateral faces of the grooves of depth less than h2 form a groove angle beta and adjacent faces of neighbouring grooves form a peak of apex angle alpha, characterized in that h2 is from the range 5 to 200 micrometer, and each pair of neighbouring grooves includes one groove of depth h2 and one groove of depth (h2−h1), where h1 ranges from 0.1 h2 to 0.9 h2.

A monolithic multiple solar cell includes at least three partial cells, with a semiconductor mirror placed between two partial cells. The aim of the invention is to improve the radiation stability of said solar cell. For this purpose, the semiconductor mirror has a high degree of reflection in at least one part of a spectral absorption area of the partial cell which is arranged above the semiconductor mirror and a high degree of transmission within the spectral absorption range of the partial cell arranged below the semiconductor mirror.