Taman’, Russia
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Novel methods of producing photovoltaic cells are provided herein, as well as photovoltaic cells produced thereby, and uses thereof. In some embodiments, a method as described herein comprises doping a substrate so as to form a p^(+) layer on one side and an n^(+ )layer on an another side, applying an antireflective coating on the p^(+ )layer, removing at least a portion of the n^(+) layer, and then forming a second n^(+) layer, such that a concentration of the n-dopant in the second n^(+) layer is variable throughout a surface of the substrate.


Untila G.G.,Moscow State University | Kost T.N.,Moscow State University | Chebotareva A.B.,Moscow State University | Zaks M.B.,Solar Wind Ltd | And 3 more authors.
Solar Energy | Year: 2014

Results obtained for the bifacial low concentrator Ag free Cz silicon solar cells based on Indium-Tin-Oxide(ITO)/(p+nn+)Cz-Si/Indium-Fluorine-Oxide (IFO) structure (". n-type" cell) as well as on IFO/(n+pp+)Cz-Si/ITO structure (". p-type" cell) are presented in this work. The (p+nn+)Cz-Si and (n+pp+)Cz-Si structures were produced by diffusion of boron and phosphorus from deposited B- and P-containing glasses followed by an etch-back step. The n+ surface of the structures was textured, whereas the p+ surface remained planar. Transparent Conducting Oxide (TCO) films, which act as antireflection electrodes, were deposited by ultrasonic spray pyrolysis method on both sides. The contact pattern of copper wire was attached by the low-temperature (160. °C) lamination method simultaneously to the front and rear TCO layers as well as to the interconnecting ribbons arranged outside the structure. The shadowing from the contacts is in the range of ~4%. The resulting solar cells showed front/rear efficiencies of 18.6-19.0%/14.9-15.3% (". p-type" cell) and 17.3-17.7%/18.1-18.5% (". n-type" cell) respectively at 1-5 suns. At 20-50% albedo of 1-sun illumination, similar energy production corresponds to 21.6-26.8% (n-type cell) and 21.6-26.1% (". p-type" cell) efficiency of a monofacial cell. © 2013 Elsevier Ltd.


Untila G.G.,Moscow State University | Kost T.N.,Moscow State University | Chebotareva A.B.,Moscow State University | Zaks M.B.,Solar Wind Ltd. | And 3 more authors.
Progress in Photovoltaics: Research and Applications | Year: 2015

We report results obtained using an innovative approach for the fabrication of bifacial low-concentrator thin Ag-free n-type Cz-Si (Czochralski silicon) solar cells based on an indium tin oxide/(p+nn+)Cz-Si/indium fluorine oxide structure. The (p+nn+)Cz-Si structure was produced by boron and phosphorus diffusion from B- and P-containing glasses deposited on the opposite sides of n-type Cz-Si wafers, followed by an etch-back step. Transparent conducting oxide (TCO) films, acting as antireflection electrodes, were deposited by ultrasonic spray pyrolysis on both sides. A copper wire contact pattern was attached by low-temperature (160°C) lamination simultaneously to the front and rear transparent conducting oxide layers as well as to the interconnecting ribbons located outside the structure. The shadowing from the contacts was ~4%. The resulting solar cells, 25-×-25-mm2 in dimensions, showed front/rear efficiencies of 17.6-17.9%/16.7-17.0%, respectively, at one to three suns (bifaciality of ~95%). Even at one-sun front illumination and 20-50% one-sun rear illumination, such a cell will generate energy approaching that produced by a monofacial solar cell of 21-26% efficiency. Copyright © 2014 John Wiley & Sons, Ltd.


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SolarWind LLC | Date: 2011-10-03

Boat hulls; Propeller-driven boats; Sail boats.


Novel methods of producing photovoltaic cells are provided herein, as well as photovoltaic cells produced thereby, and uses thereof. In some embodiments, a method as described herein comprises doping a substrate so as to form a p^(+) layer on one side and an n^(+) layer on an another side, removing at least a portion of the n^(+) layer, and then forming a second n^(+) layer, such that a concentration of the n-dopant in the second n^(+) layer is variable throughout a surface of the substrate.

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