464 citations · 806 across the 7 of their papers we have counts for
7 papers
Monolithically integrated 940 nm half VCSELs on bulk Ge substrates
Yunlong Zhao, Jia Guo, Markus Feifel +7
High quality n-type AlGaAs distributed Bragg reflectors (DBRs) and lnGaAs multiple quantum wells were successfully monolithically grown on 4-inch off-cut Ge (100) wafers. The grown…
Study of monolithically integrated 940 nm AlGaAs distributed Bragg reflectors on graded GaAsP/bulk Si substrates
Jia Guo, Yunlong Zhao, Markus Feifel +7
We report the fabrication of monolithically integrated 940 nm AlGaAs distributed Bragg reflectors (DBRs) on graded GaAsP/Si substrates. Low-density surface bumps and cross-hatch pa…
Monolithic integration of 940 nm AlGaAs distributed Bragg reflectors on bulk Ge substrates
Yunlong Zhao, Jia Guo, Markus Feifel +8
High quality 940 nm AlGaAs n-type distributed Bragg reflectors (DBRs) were successfully monolithically grown on off-cut Ge (100) substrates. The Ge-DBRs have reflectivi…
Counterbalancing light absorption and ionic transport losses in the electrolyte for integrated solar water splitting with III-V/Si dual-junctions
Moritz Kölbach, Ciler Özen, Oliver Höhn +4
Recently, significant progress in the development of III-V/Si dual-junction solar cells has been achieved. This not only boosts the efficiency of Si-based photovoltaic solar cells,…
Radiation hardness and post irradiation regeneration behavior of GaInAsP solar cells
R. Lang, J. Schön, J. Lefèvre +3
Recent developments have renewed the demand for solar cells with increased tolerance to radiation damage. To investigate the specific irradiation damage of 1 MeV electron irradiati…
Monolithic Photoelectrochemical Device for 19% Direct Water Splitting
Wen-Hui Cheng, Matthias H. Richter, Matthias M. May +6
Recent rapid progress in efficiencies for solar water splitting by photoelectrochemical devices has enhanced its prospects to enable storable renewable energy. Efficient solar fuel…
Efficient Direct Solar-to-Hydrogen Conversion by In Situ Interface Transformation of a Tandem Structure
Matthias M. May, Hans-Joachim Lewerenz, David Lackner +2
Photosynthesis is nature's route to convert intermittent solar irradiation into storable energy, while its use for an industrial energy supply is impaired by low efficiency. Artifi…