Hans-Gerd Boyen
University of Hasselt
156 Papers
1.4K Citations
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. Previous affiliations of Hans-Gerd Boyen include University of Ulm & University of Duisburg-Essen.
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Papers
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.
2K
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.
1.3K
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.
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%.
694
Assessing the toxicity of Pb- and Sn-based perovskite solar cells in model organism Danio rerio
Aslihan Babayigit,Dinh Duy Thanh,Anitha Ethirajan,Jean Manca,Marc Muller,Hans-Gerd Boyen,Bert Conings +6 more
TL;DR: A case study with systematic comparison regarding the environmental impact of Pb- and Sn-based perovskites, using zebrafish (Danio Rerio) as model organism is provided and it is shown that Sn basedperovskite may not be the ideal Pb surrogate.