Monolithic tandem solar cell

U.S. Patent Number: 5322572

Abstract: A single-crystal, monolithic, tandem, photovoltaic solar cell is described which includes (a) an InP substrate having upper and lower surfaces, (b) a first photoactive subcell on the upper surface of the InP substrate, (c) a second photoactive subcell on the first subcell; and (d) an optically transparent prismatic cover layer over the second subcell. The first photoactive subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched.

Inventors: Wanlass; Mark W. (Golden, CO)

Assignee: The United States of America as represented by the United States (Washington, DC)

Application Number: 07/689,566

Issued: 1994-06-21

Expired: 2006-06-21

Classes: 136/249 ; 136/246; 136/259; 257/E25.007; 257/E27.124; 257/E31.022; 438/69; 438/74

Field of search: 136/249TJ,246,259 437/5

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