A method of producing a bifacial photovoltaic cell is disclosed herein, the method comprising: a) forming an n-dopant-containing layer on a first surface of a semiconductor substrate; b) forming a boron-containing layer on a second surface of the substrate by sputtering boron and/or by boron ion implantation; and c) effecting diffusion of the n-dopant and boron into the substrate, to dope the first surface with the n-dopant and the second surface with the boron. Further disclosed herein are bifacial photovoltaic cells, as well as photovoltaic modules, power plants and electric devices comprising said photovoltaic cells, comprising a semiconductor substrate, an n.sup.+ layer on a first surface thereof and a boron-containing p.sup.+ layer on a second surface thereof, wherein a variability of boron concentration in the p.sup.+ layer is no more than 5%.

The disclosed technology generally relates to silicon solar cells and more particularly to a doped layer formed on a textured surface of a silicon solar cell, and methods of fabricating the same. In one aspect, a method of creating a doped layer at a rear side of a crystalline silicon bifacial solar cell is disclosed. The method can include texturing at least a rear side of a silicon substrate of the solar cell to create a pattern of pyramids, thereby creating a pyramidal topology of the rear side. The method can also include forming a doped layer at the rear side by, using epitaxial growth, growing at least one doped silicon epitaxial layer on the pyramids. Simultaneously with forming the doped layer and by using facet evolution, the pyramidal topology of the rear side can be smoothed by the growth of the at least one epitaxial layer. The epitaxial growth can be continued until, on upper parts of a majority of the pyramids, an angle between a surface of the at least one epitaxial layer and the substrate is between 5 to 35°. A crystalline silicon bifacial solar cell is also disclosed.

A solar cell system and a flexible solar panel are disclosed herein. The solar cell system includes a glass housing, a set of rows of solar cells each defining a front side and a rear side and arranged within the glass housing. The solar cell system can also include a reflective element disposed in the glass housing and facing the rear side of the set of rows of solar cells and a first terminal coupled to a first end of the set of rows of solar cells, traversing through and sealed against the first end of the glass housing. The solar cell system can be configured with other solar cell systems into the flexible solar panel that is deployable in a wide range of potential applications.

The present invention relates to a device (1) for the use of concentrating radiant energy onto a receiver (2). The device comprises a first concentrator (5) that is filled with a transmissible material for the use of increasing the acceptance angle of the concentrator and concentrating the radiant energy onto a bifacial receiver (2). Embodiments also comprise a second concentrator (4) that directs the concentrated radiant energy to both sides of the bifacial receiver, whereby the second concentrator enables the device to use a substantially smaller receiver. In some embodiments, the receivers comprise photovoltaic (PV) cells.

A solar cell includes a substrate of a first conductive type, a first doped region positioned at a first surface of the substrate and contains impurities of a second conductive type different from the first conductive type, and a first electrode part electrically connected to the first doped region. The first electrode part includes a thermosetting resin, and first and second conductive particles distributed in the thermosetting resin. The second conductive particles have a work function greater than the first conductive particles and form silicide at an interface contacting the first doped region.

A method for concurrently forming a first metal electrode (31, 58) on an n-type region of a silicon substrate (10) and a second metal electrode (32, 59) on a p-type region of the silicon substrate, wherein the n-type region and the p-type region are respectively exposed in a first and in a second area, is disclosed. The method comprises: depositing (101) an initial metal layer comprising Ni (33, 53) simultaneously in the first area and in the second area by a Ni immersion plating process using a plating solution; and depositing (102) a further metal layer (34, 54) on the initial metal layer comprising Ni (33, 53) in the first area and in the second area by an electroless metal plating process or by an immersion metal plating process, wherein the plating solution comprises Ni and a predetermined amount of another metal different from Ni.

A method for concurrently forming a first metal electrode (31, 58) on an n-type region of a silicon substrate (10) and a second metal electrode (32, 59) on a p-type region of the silicon substrate, wherein the n-type region and the p-type region are respectively exposed in a first and in a second area, is disclosed. The method comprises: depositing (101) an initial metal layer comprising Ni (33, 53) simultaneously in the first area and in the second area by a Ni immersion plating process using a plating solution; and depositing (102) a further metal layer (34, 54) on the initial metal layer comprising Ni (33, 53) in the first area and in the second area by an electroless metal plating process or by an immersion metal plating process, wherein the plating solution comprises Ni and a predetermined amount of another metal different from Ni.

The present invention discloses a tubular PECVD device for bifacial PERC solar cell. The present invention bifacial PERC solar cell has high photoelectric conversion efficiency, high appearance quality, and high EL yield, and could solve the problems of both scratching and undesirable deposition.

A solar energy system for use with tufted geosynthetics on a substantially flat surface having a racking structure with bases and attachments for frictional seating to a tufted geosynthetic ground cover system, a bifacial solar panel mounted to the racking system and electrically connected to a connection box for communicating electrical current to an electricity power conditioner of an electrical current grid generated upon exposure of the solar panel to ambient light. A method of using a solar energy system with tufted geosynthetics cover system is disclosed.

Fabrication of a double-sided photovoltaic cell, with two opposite active surfaces, comprising a step of depositing, on each active surface, at least one electric contact. The deposition step comprises in particular a shared operation of depositing on each of the active surfaces, implemented by electrolysis in a shared electrolysis tank comprising: a first compartment for depositing a metal layer on a first active surface of the cell, for fabrication of a contact comprising said metal layer on the first active surface; and a second compartment for depositing, by oxidation, a metal oxide conductor layer on the second active surface of the cell, for the fabrication of a contact comprising said metal oxide layer on the second active surface.