H
Hans-Gerd Boyen
Researcher at University of Hasselt
Publications - 153
Citations - 9849
Hans-Gerd Boyen is an academic researcher from University of Hasselt. The author has contributed to research in topics: X-ray photoelectron spectroscopy & Thin film. The author has an hindex of 39, co-authored 149 publications receiving 8512 citations. Previous affiliations of Hans-Gerd Boyen include University of Ulm & University of Duisburg-Essen.
Papers
More filters
Journal ArticleDOI
Intrinsic Thermal Instability of Methylammonium Lead Trihalide Perovskite
Bert Conings,Jeroen Drijkoningen,Nicolas Gauquelin,Aslihan Babayigit,Jan D'Haen,Lien D'Olieslaeger,Anitha Ethirajan,Jo Verbeeck,Jean Manca,Edoardo Mosconi,Filippo De Angelis,Hans-Gerd Boyen +11 more
TL;DR: In this paper, it was demonstrated that significant decomposition effects already occur during annealing of a methylammonium lead triiode perovskite at 85 °C even in inert atmosphere, thus violating international standards.
Journal ArticleDOI
Perovskite-perovskite tandem photovoltaics with optimized band gaps
Giles E. Eperon,Giles E. Eperon,Tomas Leijtens,Kevin A. Bush,Rohit Prasanna,Thomas Green,Jacob Tse-Wei Wang,David P. McMeekin,George Volonakis,Rebecca L. Milot,Richard May,Axel F. Palmstrom,Daniel J. Slotcavage,Rebecca A. Belisle,Jay B. Patel,Elizabeth S. Parrott,Rebecca J. Sutton,Wen Ma,Farhad Moghadam,Bert Conings,Bert Conings,Aslihan Babayigit,Aslihan Babayigit,Hans-Gerd Boyen,Stacey F. Bent,Feliciano Giustino,Laura M. Herz,Michael B. Johnston,Michael D. McGehee,Henry J. Snaith +29 more
TL;DR: This device architecture and materials set will enable “all-perovskite” thin-film solar cells to reach the highest efficiencies in the long term at the lowest costs.
Journal ArticleDOI
Perovskite-based hybrid solar cells exceeding 10% efficiency with high reproducibility using a thin film sandwich approach.
TL;DR: This work demonstrates hybrid solar cells based on the mixed perovskite CH3 NH3 PbI2 Cl in a thin film sandwich structure, with unprecedented reproducibility and generating efficiencies up to 10.8%.
Journal ArticleDOI
Ordered Deposition of Inorganic Clusters from Micellar Block Copolymer Films
Joachim P. Spatz,Stefan Mössmer,Christoph Hartmann,Martin Möller,Thomas Herzog,Michael Krieger,Hans-Gerd Boyen,Paul J. Ziemann,Bernd Kabius +8 more
TL;DR: In this paper, a method for generating quasiregular arrays of nanometer-sized noble metal and metal oxide clusters on flat substrates by the use of a polymer template was presented.
Journal ArticleDOI
Band Gap Tuning via Lattice Contraction and Octahedral Tilting in Perovskite Materials for Photovoltaics.
Rohit Prasanna,Aryeh Gold-Parker,Aryeh Gold-Parker,Tomas Leijtens,Bert Conings,Aslihan Babayigit,Hans-Gerd Boyen,Michael F. Toney,Michael D. McGehee +8 more
TL;DR: A strategy to systematically tune the band gap and valence and conduction band positions of metal halide perovskites through control of the cation composition is outlined, demonstrating solar cells that harvest light in the infrared up to 1040 nm, and showing promise for improvements of the bottom cell of all-perovskite tandem solar cells.