Methods of preparing flexible photovoltaic devices using epitaxial liftoff, and preserving the integrity of growth substrates used in epitaxial growth

Forrest, Stephen R; Zimmerman, Jeramy; Lee, Kyusang; Shiu, Kuen-Ting

Title: Methods of preparing flexible photovoltaic devices using epitaxial liftoff, and preserving the integrity of growth substrates used in epitaxial growth

Patent · Tue Jan 06 00:00:00 EST 2015

OSTI ID:1167025

Forrest, Stephen R; Zimmerman, Jeramy; Lee, Kyusang; Shiu, Kuen-Ting

There is disclosed methods of making photosensitive devices, such as flexible photovoltaic (PV) devices, through the use of epitaxial liftoff. Also described herein are methods of preparing flexible PV devices comprising a structure having a growth substrate, wherein the selective etching of protective layers yields a smooth growth substrate that us suitable for reuse.

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Research Organization:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: SC0001013

Assignee:: The Regents of the University of Michigan (Ann Arbor, MI)

Patent Number(s):: 8,927,319

Application Number:: 13/750,660

OSTI ID:: 1167025

Resource Relation:: Patent File Date: 2013 Jan 25

Country of Publication:: United States

Language:: English

References (8)

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Thin Film III-V Compound Solar Cell Pan, Noren; Hillier, Glen; Vu, Duy Phach https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090038678 US Patent Application 12/167588; 20090038678	patent-application	February 2009
Monolithic, Multi-Bandgap, Tandem, Ultra-Thin, Strain-Counterbalanced, Photovoltaic Energy Converters with Optimal Subcell Bandgaps Wanlass, Mark W.; Mascarenhas, Angelo https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090229659 US Patent Application 12/121463; 20090229659	patent-application	September 2009
Epitaxial lift-off GaAs solar cell from a reusable GaAs substrate van Geelen, A.; Hageman, P. R.; Bauhuis, G. J. Materials Science and Engineering: B, Vol. 45, Issue 1-3, p. 162-171 https://doi.org/10.1016/S0921-5107(96)02029-6	journal	March 1997
Lightweight, low cost GaAs solar cells on 4″ epitaxial liftoff (ELO) wafers Tatavarti, Rao; Hillier, G.; Dzankovic, A. 2008 33rd IEEE Photovolatic Specialists Conference (PVSC) https://doi.org/10.1109/PVSC.2008.4922900	conference	May 2008
Development status of “Space Solar Sheet” Yamaguchi, Hiroshi; Takahashi, Naoki; Kodama, Tomoya 2008 33rd IEEE Photovolatic Specialists Conference (PVSC) https://doi.org/10.1109/PVSC.2008.4922715	conference	May 2008
Paper-Thin InGaP/ GaAs Solar Cells Takamoto, Tatsuya; Kodama, Tomoya; Yamaguchi, Hiroshi 2006 IEEE 4th World Conference on Photovoltaic Energy Conference https://doi.org/10.1109/WCPEC.2006.279833	conference	May 2006
Large area, thin film epitaxial lift off III/V solar cells Hageman, P. R.; Bauhuis, G. J.; van Geelen, A. Conference Record of the Twenty Fifth IEEE Photovoltaic Specialists Conference - 1996 https://doi.org/10.1109/PVSC.1996.563945	conference	January 1996

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