Solaero Technologies Corp.

Samantha Cruz

Daniel Derkacs

Nathaniel Miller

Bed Pantha

Pravin Patel

Alexander Haas

Daniel James Aiken

Mark A Stan

A multijunction solar cell and its method of fabrication, including an upper and a lower solar subcell each having an emitter layer and a base layer forming a photoelectric junction; a near infrared (NIR) wideband reflector layer disposed below the upper subcell and above the lower subcell for reflecting light in the spectral range of 900 to 1050 nm which represents unused and undesired solar energy and thereby reducing the overall solar energy absorptance in the solar cell and providing thermodynamic radiative cooling of the solar cell when deployed in space outside the atmosphere.

Distributed bragg reflector structures in multijunction solar cells

Distributed Bragg reflector structures in multijunction solar cells

The present disclosure provides a multijunction solar cell comprising: an upper solar subcell having an indirect band gap semiconductor emitter layer composed of greater than 0.8 but less than 1.0 mole fraction aluminum and a base layer, the emitter layer and the base layer forming a heterojunction solar subcell; and a lower solar subcell disposed beneath the upper solar subcell, wherein the lower solar subcell has an emitter layer and a base layer forming a photoelectric junction. In some embodiments, the emitter layer of the upper solar subcell is an n-type AlGaAs layer with 0.8&#x3c;x&#x3c;1.0 and having a band gap of greater than 2.0 eV.

Multijunction solar cells having an indirect high band gap semiconductor emitter layer in the upper solar subcell

Growing community of inventors

Albuquerque, NM, United States of America

Samantha Cruz