A solar cell includes: a substrate having a front surface and a opposite rear surface; a first dielectric layer formed over the rear surface; a first doped conductive layer formed over a surface of the first dielectric layer away from the substrate; grooves arranged alternatingly in a first direction, penetrating the first doped conductive layer and the first dielectric layer, and extending into inside of the substrate; a second dielectric layer formed over a bottom surface of the grooves; a second doped conductive layer formed over a surface of the second dielectric layer away from the substrate; and a doped layer aligned with the second doped conductive layer and located between the second dielectric layer and the substrate. The first doped conductive layer and the doped layer are doped with a first dopant element, and the substrate and the second doped conductive layer are doped with a second dopant element.

The present application relates to a solar cell and a photovoltaic module. In one aspect, a solar cell includes a silicon substrate and a passivation layer. The silicon substrate includes a first surface and an opposite second surface, and a plurality of side surfaces connecting the first surface and the second surface. At least one of the side surfaces includes a plurality of first texture regions and second texture regions. The first texture region includes a plurality of first pyramid structures. The second texture region includes a plurality of second pyramid structures. A structural dimension of the second pyramid structure is greater than a structural dimension of the first pyramid structure. The second texture regions are formed between adjacent first texture regions. The passivation layer covers the first texture regions and the second texture regions of at least one of the side surfaces.

A solar array, comprising: at least one solar panel comprising a primary surface and a secondary surface; the primary surface having a group of direct solar cells disposed thereon, each of the direct solar cells configured to receive direct sunlight and to provide electrical power to a respective portion of a substantially flat flexible circuit; and the secondary surface having a group of indirect solar cells disposed thereon, each of the indirect solar cells configured to receive reflected sunlight and to provide electrical power to a respective portion of a substantially flat flexible circuit.

Embodiments of the present disclosure provide a solar cell and a production method thereof, and a photovoltaic module. The solar cell includes: a substrate; a tunnel dielectric layer, located on a surface of the substrate; a doped conductive layer, located on a surface of the tunnel dielectric layer away from the substrate, the doped conductive layer includes a doping element of a same type as a doping element of the substrate, and a plurality of sets of heavily doped areas, the sets includes first heavily doped areas and second heavily doped areas extending in a first direction and arranged at intervals in a second direction; and a plurality of electrodes arranged at intervals, the electrodes extend in the second direction and correspond to the sets, and the electrodes contact with at least part of each sets. The present disclosure can improve photoelectric conversion efficiency of the solar cell.

The disclosure relates to the technical field of solar cells, and provides a solar cell and a doped region structure thereof, a cell assembly, and a photovoltaic system. The doped region structure includes a first doped layer, a passivation layer, and a second doped layer that are disposed on a silicon substrate in sequence. The passivation layer is a porous structure having the first doped layer and/or the second doped layer inlaid in a hole region. The first doped layer and the second doped layer have a same doping polarity. By means of the doped region structure of the solar cell provided in the disclosure, the difficulty in production and the limitation on conversion efficiency as a result of precise requirements for the accuracy of a thickness of a conventional tunneling layer are resolved.

Building integrated photovoltaic (BIPV) systems provide for solar panel arrays that can be aesthetically pleasing and appear seamless to an observer. Micro louvered structures can be incorporated into photovoltaic (PV) stacks, such that light entering a PV stack that is reflected off of embedded solar cells is not directed out at angles at which a typical observer would normally view the PV stack or roof on which a solar array is installed. Further, portions of the micro louvered structures can be coated with reflective, refractive, dielectric, and/or colored films such that underlying solar cells within the PV stack are obscured from the sightlines of a typical observer.

This application discloses a solar cell and a photovoltaic module. In one example, a solar cell includes a first surface and a second surface opposite to each other, and a side surface connecting the first surface and the second surface. The side surface includes a cut surface, the cut surface including a cut edge adjacent to the first surface and a break edge adjacent to the second surface. A first passivation layer is formed on the cut surface. The first passivation layer includes an aluminum oxide passivation layer. The cut surface includes a first region adjacent to the cut edge and a second region farther away from the cut edge than the first region. A ratio of oxygen to aluminum in at least a part of the first region is greater than a ratio of oxygen to aluminum in at least a part of the second region.

A solar cell, a preparation method thereof, and a photovoltaic module. The solar cell includes a semiconductor substrate, a first substrate doped layer, a second substrate doped layer, a first passivation layer, and a first doped semiconductor layer. The semiconductor substrate includes a first surface, and the first surface includes a first region and a second region adjacent to the first region along a first direction. The first substrate doped layer is located in the first region. The second substrate doped layer is located in the second region, and the first substrate doped layer is connected to the second substrate doped layer. The first passivation layer is located on a side of the second substrate doped layer away from the semiconductor substrate. The first doped semiconductor layer is located on a side of the first passivation layer away from the semiconductor substrate.

A solar cell including: a semiconductor substrate having a first surface and a second surface opposite to each other, and a plurality of side surfaces adjacently connected between the first and the second surfaces; a passivated contact structure, located on a part of the first surface, including an interface passivation layer and a first doped semiconductor layer that are sequentially stacked. In a direction from the first surface to the second surface, respective side surface of the plurality of side surfaces includes a first region and a second region that are sequentially adjacent. The first region protrudes in a direction away from the respective side surface relative to the second region. The first doped semiconductor layer is located on a surface of the first region. The first doped semiconductor layer located in the first region and the first doped semiconductor layer located on the first surface are integrally continuous.

A colored solar cell includes a silicon wafer having a polished surface which includes at least one of a front surface and a back surface of the silicon wafer. One or more grooves are formed on a partial region of the polished surface so as to divide the polished surface into polished regions and grooved regions. The one or more grooves correspond to the grooved regions. At least one pyramid structure is formed in each groove, and an angle between a side wall of the pyramid structure and a bottom edge of the pyramid structure is 0-65.