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Gerald Siefer

Gerald Siefer

D-Index & Metrics

Engineering and Technology

D-Index
39
Citations
9509
World Ranking
7529
National Ranking
252

Overview

Gerald Siefer is affiliated with the Fraunhofer Society in Germany. Their research primarily focuses on the fields of engineering with a strong emphasis on electrical and electronic engineering. Their work spans additional subfields including renewable energy, sustainability and the environment, environmental engineering, biomedical engineering, and atomic and molecular physics and optics.

The scientist's research topics reflect a concentration on solar energy and photovoltaic technologies. Key topics covered in their publications include:

  • solar cell performance optimization
  • Chalcogenide semiconductor thin films
  • silicon and solar cell technologies
  • photovoltaic system optimization techniques
  • perovskite materials and applications
  • photovoltaic systems and sustainability
  • nanowire synthesis and applications

Gerald Siefer has published extensively in scientific venues. Frequent publication venues are:

  • Progress in Photovoltaics Research and Applications
  • AIP Conference Proceedings
  • Solar RRL
  • IEEE Journal of Photovoltaics
  • ACS Applied Energy Materials

Among their recent papers are multiple versions of the "Solar cell efficiency tables" published in the journal Progress in Photovoltaics Research and Applications. These include:

  • Solar Cell Efficiency Tables (Version 65), 2024, Progress in Photovoltaics Research and Applications
  • Solar cell efficiency tables (Version 64), 2024, Progress in Photovoltaics Research and Applications
  • Solar cell efficiency tables (Version 63), 2023, Progress in Photovoltaics Research and Applications
  • Solar cell efficiency tables (version 62), 2023, Progress in Photovoltaics Research and Applications
  • Solar cell efficiency tables (Version 61), 2022, Progress in Photovoltaics Research and Applications

Gerald Siefer collaborates frequently with several co-authors. Their most frequent collaborators include:

  • Marc Steiner
  • Stefan W. Glunz
  • David Chojniak
  • Frank Dimroth
  • Michael Schachtner

Best Publications

  • InP Nanowire Array Solar Cells Achieving 13.8% Efficiency by Exceeding the Ray Optics Limit

    Jesper Wallentin;Nicklas Anttu;Damir Asoli;Maria Huffman

  • Current-matched triple-junction solar cell reaching 41.1% conversion efficiency under concentrated sunlight

    Wolfgang Guter;Jan Schöne;Simon P. Philipps;Marc Steiner

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

    Frank Dimroth;Matthias Grave;Paul Beutel;Ulrich Fiedeler

  • Solar cell efficiency tables (Version 61)

    Unknown

  • Solar cell efficiency tables (version 62)

    Unknown

  • Solar cell efficiency tables (Version 63)

    Unknown

  • Four-Junction Wafer-Bonded Concentrator Solar Cells

    Frank Dimroth;Thomas N. D. Tibbits;Markus Niemeyer;Felix Predan

  • III–V-on-silicon solar cells reaching 33% photoconversion efficiency in two-terminal configuration

    Romain Cariou;Romain Cariou;Jan Benick;Frank Feldmann;Frank Feldmann;Oliver Höhn

  • A 19.9%-efficient ultrathin solar cell based on a 205-nm-thick GaAs absorber and a silver nanostructured back mirror

    Hung-Ling Chen;Andrea Cattoni;Romaric De Lépinau;Alexandre W. Walker;Alexandre W. Walker

  • Analysis of temperature coefficients for III–V multi‐junction concentrator cells

    Gerald Siefer;Andreas W. Bett

  • Fabrication of GaInP/GaAs//Si Solar Cells by Surface Activated Direct Wafer Bonding

    Karen Derendorf;Stephanie Essig;Eduard Oliva;Vera Klinger

  • Four-junction spectral beam-splitting photovoltaic receiver with high optical efficiency

    Bernhard Mitchell;Gerhard Peharz;Gerald Siefer;Marius Peters

  • A simple method for quantifying spectral impacts on multi-junction solar cells

    G. Peharz;G. Siefer;A.W. Bett

  • Comparison of Direct Growth and Wafer Bonding for the Fabrication of GaInP/GaAs Dual-Junction Solar Cells on Silicon

    Frank Dimroth;Tobias Roesener;Stephanie Essig;Christoph Weuffen

  • 43% Sunlight to Electricity Conversion Efficiency Using CPV

    Marc Steiner;Gerald Siefer;Thomas Schmidt;Maike Wiesenfarth

  • Understanding InP Nanowire Array Solar Cell Performance by Nanoprobe-Enabled Single Nanowire Measurements

    Gaute Otnes;Enrique Barrigón;Christian Sundvall;K. Erik Svensson

  • Investigations on the temperature dependence of CPV modules equipped with triple-junction solar cells

    Gerhard Peharz;Juan P. Ferrer Rodríguez;Gerald Siefer;Andreas W. Bett

  • Semi-Transparent Perovskite Solar Cells with ITO Directly Sputtered on Spiro-OMeTAD for Tandem Applications.

    Alexander J Bett;Kristina M Winkler;Martin Bivour;Ludmila Cojocaru

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

    Alexander J. Bett;Patricia S.C. Schulze;Kristina M. Winkler;Özde S. Kabakli

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

    A. Dobrich;K. Schwarzburg;T. Hannappel;T. Signamarcheix

  • External quantum efficiency measurements of Germanium bottom subcells: Measurement artifacts and correction procedures

    Gerald Siefer;Carsten Baur;Andreas W. Bett

  • Characterization of monolithic III–V multi-junction solar cells—challenges and application

    M. Meusel;C. Baur;G. Siefer;F. Dimroth

  • High-Concentration PV using III-V Solar Cells

    A. Bett;B. Burger;F. Dimroth;G. Siefer

  • A method for using CPV modules as temperature sensors and its application to rating procedures

    Gerhard Peharz;Juan P. Ferrer Rodríguez;Gerald Siefer;Andreas W. Bett

  • Triple-Junction III–V Based Concentrator Solar Cells: Perspectives and Challenges

    C. Baur;A. W. Bett;F. Dimroth;G. Siefer

  • YieldOpt, a model to predict the power output and energy yield for concentrating photovoltaic modules

    Marc Steiner;Gerald Siefer;Thorsten Hornung;Gerhard Peharz

  • Four-junction wafer bonded concentrator solar cells

    Frank Dimroth;Thomas N. D. Tibbits;Markus Niemeyer;Felix Predan

Frequent Co-Authors

Andreas W. Bett
Andreas W. Bett Fraunhofer Institute for Solar Energy Systems
Frank Dimroth
Frank Dimroth Fraunhofer Institute for Solar Energy Systems
Stefan W. Glunz
Stefan W. Glunz Fraunhofer Institute for Solar Energy Systems
Jan Benick
Jan Benick Fraunhofer Society
Jan Christoph Goldschmidt
Jan Christoph Goldschmidt Fraunhofer Institute for Solar Energy Systems
Magnus T. Borgström
Magnus T. Borgström Lund University
Masafumi Yamaguchi
Masafumi Yamaguchi Toyota Technological Institute
Lars Samuelson
Lars Samuelson Lund University
Eduardo F. Fernández
Eduardo F. Fernández University of Jaén
Wilhelm Warta
Wilhelm Warta Fraunhofer Institute for Solar Energy Systems

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