SOLAR POWER SYSTEM FOR AIRCRAFT, WATERCRAFT, OR LAND VEHICLES USING INVERTED METAMORPHIC MULTIJUNCTION SOLAR CELLS

• Main Authors: MCGLYNN DANIEL, SHARPS PAUL R, STAN MARK A, CORNFELD ARTHUR
• Format: Patent
• Language: English; Japanese
• Published: 02.02.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; EQUIPMENT FOR SHIPPING; GENERATION; GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES; PERFORMING OPERATIONS; RELATED EQUIPMENT; SEMICONDUCTOR DEVICES; SHIPS OR OTHER WATERBORNE VESSELS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

PROBLEM TO BE SOLVED: To provide: an improved multijunction solar cell; and a solar cell as a thin, flexible film that conforms to a non-planar support.SOLUTION: A solar cell includes a flexible thin film semiconductor body formed from III-V compound semiconductors. The thin film semiconductor body includes: a first solar subcell A having a first band gap; a second solar subcell B disposed over the first subcell and having a second band gap smaller than the first band gap; a grading interlayer disposed over the second subcell and having a third band gap greater than the second band gap; and a third solar subcell C disposed over the interlayer, being lattice mismatched with respect to the second subcell and having a fourth band gap smaller than the third band gap. 【課題】改善された多接合ソーラーセルを提供すること。また、ソーラーセルを非平面支持体に適合する薄い可撓性の膜として提供すること。【解決手段】ＩＩＩ−Ｖ族化合物半導体から形成された可撓性の薄膜半導体本体を含み、薄膜半導体本体は第１のバンドギャップを有する第１のソーラーサブセルＡと、この上に配置され、第１のバンドギャップより小さい第２のバンドギャップを有する第２のソーラーサブセルＢと、この上に配置され、第２のバンドギャップより大きい第３のバンドギャップを有する勾配緩和中間層と、この上に配置され、第２のサブセルと格子不整合であり、第３のバンドギャップより小さい第４のバンドギャップを有する第３のソーラーサブセルＣとを含む。【選択図】図１