US 12,132,127 B2
Integrated solar collectors using epitaxial lift off and cold weld bonded semiconductor solar cells
Stephen R. Forrest, Ann Arbor, MI (US); Christopher Kyle Renshaw, Chicago, IL (US); and Michael Slootsky, Ann Arbor, MI (US)
Assigned to The Regents of the University of Michigan, Ann Arbor, MI (US)
Filed by The Regents of the University of Michigan, Ann Arbor, MI (US)
Filed on Sep. 24, 2021, as Appl. No. 17/484,342.
Application 17/484,342 is a continuation of application No. 14/853,317, filed on Sep. 14, 2015, abandoned.
Application 14/853,317 is a continuation of application No. 13/543,450, filed on Jul. 6, 2012, abandoned.
Claims priority of provisional application 61/505,014, filed on Jul. 6, 2011.
Prior Publication US 2022/0013672 A1, Jan. 13, 2022
Int. Cl. H01L 31/0232 (2014.01); H01L 31/0304 (2006.01); H01L 31/0392 (2006.01); H01L 31/0445 (2014.01); H01L 31/0687 (2012.01); H01L 31/0693 (2012.01); H01L 31/18 (2006.01)
CPC H01L 31/02327 (2013.01) [H01L 31/03046 (2013.01); H01L 31/0392 (2013.01); H01L 31/03926 (2013.01); H01L 31/0445 (2014.12); H01L 31/0687 (2013.01); H01L 31/0693 (2013.01); H01L 31/1844 (2013.01); H01L 31/1896 (2013.01); Y02E 10/52 (2013.01); Y02E 10/544 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A photovoltaic device comprising:
a substrate comprising a reflective surface; and
a solar cell comprising an active photovoltaic region and a metal contact;
wherein the substrate is shaped as a cylindrical compound parabolic concentrator to concentrate incident light onto the active photovoltaic region of the solar cell, and
wherein the metal contact of the solar cell is bonded directly to the reflective surface of the substrate, the solar cell being shaped as a strip, and the strip being disposed along a center of the cylindrical compound parabolic concentrator.