Array of spherical solar cells and its method of fabrication

• Main Authors: PARK, YOUNG-TAE, NAKAMURA, TOSHIYUKI, MUROZONO, MIKIO, HIBINO, TAKESHI, MOURI, NOBORU, KODANI, YOSHIAKI
• Format: Patent
• Language: English; French; German
• Published: 18.05.2011
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

This invention relates to a method for producing a photovoltaic device that includes spherical photovoltaic elements and a support with a large number of recesses for receiving the elements one by one and to the photovoltaic device. Each of the spherical photovoltaic elements comprises a spherical first semiconductor and a second semiconductor layer covering the surface of the first semiconductor. A conductive adhesive is applied in advance to the bottoms of the recesses of the support serving as a second conductor layer. The elements are disposed in the bottoms of the recesses with the conductive adhesive applied thereto, to fix the elements to the support and electrically connect their second semiconductor layers to the support. An electrical insulator layer, which has through-holes serving as conductive paths, is bonded to the backside of the support, and a first conductor layer, which interconnects the electrodes of the first semiconductors of the respective elements, is formed thereon.