Gerald Siefer

Fraunhofer Institute for Solar Energy Systems

Germany

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Articles (13)

Year:

2025

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2025

Year:

2025

Year:

2024

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2024

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2023

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2021

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2021

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2021

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2020

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2020

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2020

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2020

Collaborators (7)

Stefan W. Glunz

Fraunhofer Institute for Solar Energy Systems

GERMANY

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Christoph Messmer

University of Freiburg

GERMANY

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Henning Helmers

Fraunhofer Institute for Solar Energy Systems

GERMANY

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Martin C. Schubert

Fraunhofer Institute for Solar Energy Systems

GERMANY

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Benedikt Bläsi

Fraunhofer Institute for Solar Energy Systems

GERMANY

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Maike Wiesenfarth

Fraunhofer Institute for Solar Energy Systems

GERMANY

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Patricia S. C. Schulze

Fraunhofer Institute for Solar Energy Systems

GERMANY

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Gerald Siefer

Research Interests

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Articles (13)

Rear-heterojunction GaInP laser power converter with 59% monochromatic efficiency at 590 nm

Power Rating of a Novel Micro-CPV Module Concept and Operational Influences

Measuring the External Quantum Efficiency of Tandem Photovoltaic Modules Using an LED‐Based Solar Simulator

Sheet Resistance Optimization in (Al)GaInP Solar Cells for Concentrator Quadruple–Junction Solar Cells

Wafer‐bonded two‐terminal III‐V//Si triple‐junction solar cell with power conversion efficiency of 36.1% at AM1.5g

Maximizing Current Density in Monolithic Perovskite Silicon Tandem Solar Cells

Epitaxial GaInP/GaAs/Si Triple-Junction Solar Cell with 25.9% AM1.5g Efficiency Enabled by Transparent Metamorphic Al<sub>x</sub>Ga<sub>1−x</sub>As<sub>y</sub>P<sub>1−y</sub> Step-Graded Buffer Structures

Improving the accuracy of energy yield calculations of tandem solar cell-based CPV-modules

Power rating procedure of hybrid concentrator/flat-plate photovoltaic bifacial modules

Maximum power output prediction of HCPV FLATCON® module using an ANN approach

Measurement Uncertainties in I-V Calibration of Multi-junction Solar Cells for Different Solar Simulators and Reference Devices

Two-Terminal Direct Wafer-Bonded GaInP/AlGaAs//Si Triple-Junction Solar Cell with AM1.5g Efficiency of 34.1%

Two-terminal Perovskite silicon tandem solar cells with a high-Bandgap Perovskite absorber enabling voltages over 1.8 V

Collaborators (7)

Stefan W. Glunz

Christoph Messmer

Henning Helmers

Martin C. Schubert

Benedikt Bläsi

Maike Wiesenfarth

Patricia S. C. Schulze

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