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

Patent ·
OSTI ID:1082883
; ; ;

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.

Research Organization:
EFRC (Energy Frontier Research Centers), The Regents of the University of Michigan (Ann Arbor, MI)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0001013
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI)
Patent Number(s):
8,378,385
Application Number:
12/878,261
OSTI ID:
1082883
Country of Publication:
United States
Language:
English

References (10)

Compound semiconductor device epitaxial growth substrate, semiconductor device, and manufacturing method thereof patent-application March 2006
Light weight low cost InGaP/GaAs dual-junction solar cells on 4" epitaxial liftoff (ELO) wafers conference August 2009
Thin Film III-V Compound Solar Cell patent-application February 2009
Large area, thin film epitaxial lift off III/V solar cells conference January 1996
Paper-Thin InGaP/ GaAs Solar Cells conference May 2006
Monolithic, Multi-Bandgap, Tandem, Ultra-Thin, Strain-Counterbalanced, Photovoltaic Energy Converters with Optimal Subcell Bandgaps patent-application September 2009
Lightweight, low cost InGaP/GaAs dual-junction solar cells on 100 mm epitaxial liftoff (ELO) wafers conference June 2009
Epitaxial lift-off GaAs solar cell from a reusable GaAs substrate journal March 1997
Development status of “Space Solar Sheet” conference May 2008
Re-use of GaAs substrates for epitaxial lift-off III-V solar cells
  • Hageman, P. R.; van Geelen, A.; Thomeer, R. A. J.
  • Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) https://doi.org/10.1109/WCPEC.1994.520741
conference January 1994

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