The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Gerald Siefer sits on this spectrum.
This scientist: 168 publications — 35th percentile
35% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 804 publications or more.
The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Gerald Siefer sits on this spectrum.
This scientist: 39 D-Index — 24th percentile
24% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 107 D-Index or more.
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:
Gerald Siefer has published extensively in scientific venues. Frequent publication venues are:
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:
Gerald Siefer collaborates frequently with several co-authors. Their most frequent collaborators include:
Jesper Wallentin;Nicklas Anttu;Damir Asoli;Maria Huffman
Wolfgang Guter;Jan Schöne;Simon P. Philipps;Marc Steiner
Frank Dimroth;Matthias Grave;Paul Beutel;Ulrich Fiedeler
Unknown
Unknown
Unknown
Frank Dimroth;Thomas N. D. Tibbits;Markus Niemeyer;Felix Predan
Romain Cariou;Romain Cariou;Jan Benick;Frank Feldmann;Frank Feldmann;Oliver Höhn
Hung-Ling Chen;Andrea Cattoni;Romaric De Lépinau;Alexandre W. Walker;Alexandre W. Walker
Gerald Siefer;Andreas W. Bett
Karen Derendorf;Stephanie Essig;Eduard Oliva;Vera Klinger
Bernhard Mitchell;Gerhard Peharz;Gerald Siefer;Marius Peters
G. Peharz;G. Siefer;A.W. Bett
Frank Dimroth;Tobias Roesener;Stephanie Essig;Christoph Weuffen
Marc Steiner;Gerald Siefer;Thomas Schmidt;Maike Wiesenfarth
Gaute Otnes;Enrique Barrigón;Christian Sundvall;K. Erik Svensson
Gerhard Peharz;Juan P. Ferrer Rodríguez;Gerald Siefer;Andreas W. Bett
Alexander J Bett;Kristina M Winkler;Martin Bivour;Ludmila Cojocaru
Alexander J. Bett;Patricia S.C. Schulze;Kristina M. Winkler;Özde S. Kabakli
A. Dobrich;K. Schwarzburg;T. Hannappel;T. Signamarcheix
Gerald Siefer;Carsten Baur;Andreas W. Bett
M. Meusel;C. Baur;G. Siefer;F. Dimroth
A. Bett;B. Burger;F. Dimroth;G. Siefer
Gerhard Peharz;Juan P. Ferrer Rodríguez;Gerald Siefer;Andreas W. Bett
C. Baur;A. W. Bett;F. Dimroth;G. Siefer
Marc Steiner;Gerald Siefer;Thorsten Hornung;Gerhard Peharz
Frank Dimroth;Thomas N. D. Tibbits;Markus Niemeyer;Felix Predan
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