PHOTOVOLTAIC 3D-CELL Russian patent published in 2022 - IPC H01L31/04 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of equipment of photoelectrical systems of conversion of light energy into electrical one; it can be used for the manufacture of solar active elements. A photovoltaic 3D-cell consists of substrate made in the form of a cylinder, the cross-section of which in a plane perpendicular to the generatrix is a rectangle, circumference or ellipse with a film layered structure applied to its outer surface, consisting of an active layer converting light energy into electrical one, made between two film electrodes brought to ends of the cylinder: the first one (from substrate) made of optically transparent material with an absorption coefficient more than that of substrate and less that that of the active layer; the second electrode made of metal not transparent and reflective to light. The active layer is made based on one or layer-by-layer combination of several semiconductors: silicon, germanium, gallium arsenide, indium phosphide, while the ratio of the length of substrate-cylinder to a smaller size of its section shape is equal to 2(K_md)^-1, where K_m is a median value of the absorption coefficient in its spectral interval, d is a thickness of the active layer.

EFFECT: invention provides for an increase in efficiency coefficient and reduction in the cost of devices using the claimed cell.

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