Paul Beutel

Photonic structures for III-V//Si multi-junction solar cells with efficiency >33%

Jan Benick, Gerald Siefer, Nico Tucher, 2018, Photonics Europe.

Status of Four-Junction Cell Development at Fraunhofer ISE

Alexandre W. Walker, Gerald Siefer, M. Niemeyer, 2017 .

InP-based composite substrates for four junction concentrator solar cells

Shay Reboh, Eric Guiot, Thomas Signamarcheix, 2015 .

GaInP/AlGaAs metal‐wrap‐through tandem concentrator solar cells

Michael Schachtner, Frank Dimroth, Christophe Jany, 2017 .

Development of high efficiency wafer bonded 4-junction solar cells for concentrator photovoltaic applications

Eric Guiot, Thomas Signamarcheix, Gerald Siefer, 2014, 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC).

Wafer bonded four‐junction GaInP/GaAs//GaInAsP/GaInAs concentrator solar cells with 44.7% efficiency

Eric Guiot, Ulrich Fiedeler, Thomas Signamarcheix, 2014 .

Four-junction wafer bonded concentrator solar cells

Eric Guiot, Thomas Signamarcheix, Gerald Siefer, 2015, 2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC).

Four-Junction Wafer-Bonded Concentrator Solar Cells

Eric Guiot, Thomas Signamarcheix, Gerald Siefer, 2015, IEEE Journal of Photovoltaics.

New Efficiency Frontiers with Wafer-Bonded Multi-Junction Solar Cells.

Eric Guiot, Thomas Signamarcheix, Gerald Siefer, 2014 .