A solar power generator has: a frame securable to an underwater ground surface; a shaft supported by the frame; a casing floatable on a body of water and movably mounted to the frame via the shaft, the casing rotatable relative to the frame about a first axis defined by the shaft; a photovoltaic cell array secured to the casing; and a motor operatively connected to the casing for rotating the casing about the first axis to orient the photovoltaic cell array towards a sun in function of an azimuth of the sun.

This application provides a solar cell, including a front electrode, a functional layer, and a back electrode. The front electrode is an electrode on a side of an illuminated surface. The front electrode includes a high-conductivity region and a low-conductivity region that are adjacent to each other, or the back electrode includes a high-conductivity region and a low-conductivity region that are adjacent to each other. The front electrode and/or the back electrode may be designed to be separated by region, and conductivity of one conductive region is designed to be higher than conductivity of the other conductive region. This can effectively avoid a film rectangular resistance loss caused by large-scale non-uniform lateral transfer of a photocurrent, and improve photoelectric conversion efficiency of the cell. In addition, cell comprehensive performance can be improved by flexibly selecting materials based on different requirements of different regions in different application scenarios.

A poly-layered, poly-dimensional solar photovoltaic stack structure may be provided in a tower form. A plurality of solar panels may be stacked on top of one another to create a solar stack tower. Using the solar stack tower, reflection, refraction, diffusion, and transportation of light may transmit photons from a higher area of photon saturation to a lower area of photon saturation. The solar stack tower may provide an enclosed structure, protecting and insulating the solar panels from heat, moisture, dust, and other elements that usually damage solar panels over time.

A photoelectric conversion element for detecting the spot size of incident light, including a photoelectric conversion substrate provided with two main surfaces, and multiple first sensitivity sections and second sensitivity sections arranged in a prescribed direction. When sensitivity regions on the respective main surfaces of the multiple first sensitivity sections are defined as first sensitivity regions, and sensitivity regions that appear on the main surfaces of the second sensitivity sections are defined as second sensitivity regions, each of the first sensitivity regions receives at least a part of light incident on the main surfaces, and has a pattern in which, in accordance with enlargement of an irradiation region irradiated with incident light on the main surface, the proportion of the first sensitivity regions in the irradiation region with respect to the first sensitivity regions other than those in the irradiation region and the second sensitivity regions is decreased.

A non-imaging optical concentrator, including a top portion, a body, and a bottom portion, wherein the top portion is configured to receive an incident light and transmit the received incident light to the body when the incident light is within an angle of acceptance for the non-imaging optical concentrator, and where the body is configured to reflect the incident light transmitted by the top portion to the bottom portion when the incident light is within the angle of acceptance for the non-imaging optical concentrator, and wherein the top portion is configured to split or diverge the incident light into two or more directions when the incident light is within the angle of acceptance for the non-imaging optical concentrator.

A plate-shaped component includes a transparent cover plate and a planar back element attached to the cover plate. The cover plate has a front surface facing the external environment and a back surface facing the back element. At least one surface selected from the front and back surfaces has at least one structured region, and at least one color filter layer for reflecting light within a predetermined wavelength range is arranged on the at least one surface selected from the front and back surfaces. The at least one structural region is perpendicular to the plane of the cover plate. The at least one color filter layer includes at least one refractive layer having a refractive index of greater than 2.5 in the wavelength range from 400 nm to at least 700 nm and an extinction coefficient of at least 0.2 below 450 nm and less than 0.2 above 700 nm.

A solar cell, a method for producing a solar cell and a solar cell module are provided. The solar cell includes: a substrate having a front surface and a rear surface opposite to the front surface; a first passivation layer, a second passivation layer and a third passivation layer sequentially formed on the front surface and in a direction away from the front surface; wherein the first passivation layer includes a dielectric material; the second passivation layer includes a first silicon nitride Si.sub.mN.sub.n material, and a ratio of n/m is 0.5˜1; the third passivation layer includes a silicon oxynitride SiO.sub.iN.sub.j material, and a ratio of j/i is 0.1˜0.6; and a tunneling oxide layer and a doped conductive layer sequentially formed on the rear surface and in a direction away from the rear surface, wherein the doped conductive layer and the substrate have a doping element of a same conductivity type.

A 3D printed three-dimensional photovoltaic system that allows for the absorption of solar energy from various angles. The solar structure has a plurality of solar cells in a substantially flat 3D polygon solar frame or substantially flat mountainous 3D solar frame having an uneven surface and a reflective surface positioned underneath the solar frame to reflect light. The plurality of solar cells are oriented at various angles with respect to said reflective surface. The plurality of solar cells are configured to receive sunlight.

An optical collection apparatus includes a plurality of light transmissive optical reflectors and a plurality of planar bifacial solar cells. Each light transmissive optical reflector is configured to transmit indirect light impinging on first and second collection sides thereof. First and second photovoltaic sides of each of the plurality of bifacial solar cells are positioned to collect indirect light impinging thereon. The planar bifacial solar cells are arranged such that at least one light transmissive optical reflector of the plurality of light transmissive optical reflectors is positioned between consecutive ones of the planar bifacial solar cells. Each light transmissive optical reflector of the plurality of light transmissive optical reflectors is configured to reflect direct incoming light impinging on the first collection side thereof towards the first photovoltaic side of a corresponding one of the planar bifacial solar cells. A solar collection and shading system is also contemplated.

A solar energy collector includes: a solar energy collection tube having an absorption medium flow path for allowing an absorption medium to flow therethrough; a lens configured to concentrate solar energy on the solar energy collection tube; and an actuator configured to move the solar energy collection tube or the lens based on an incidence angle of the solar energy so that the solar energy is focused on the solar energy collection tube.