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.
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Journal ArticleDOI
Influence of Interface Morphology onto the Photovoltaic Properties of Nanopatterned ZnO/Poly(3-hexylthiophene) Hybrid Solar Cells. An Impedance Spectroscopy Study
Bert Conings,Linny Baeten,Hans-Gerd Boyen,Donato Spoltore,Jan D'Haen,Lars Grieten,Patrick Wagner,Marlies K. Van Bael,Jean Manca +8 more
TL;DR: In this article, the authors focused on the characterization of the ZnO/poly(3-hexylthiophene) interfaces in nanostructured hybrid solar cells, aiming to elucidate the relationship between thermal treatment, local morphology, and device performance.
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Growth of thin, flat, epitaxial (1 1 1) oriented gold films on c-cut sapphire
TL;DR: In this paper, the authors developed a growth procedure for epitaxial Au using X-ray diffraction and high-energy electron extraction (HEED) to obtain a thickness of less than 50nm.
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Perovskite‐Based Hybrid Solar Cells Exceeding 10% Efficiency with High Reproducibility Using a Thin Film Sandwich Approach.
TL;DR: Hybrid solar cells based on the mixed metal halide perovskite absorber MeNH3PbI2Cl, sandwiched between selective contacts of TiO2 and poly-3-hexylthiophene show unprecedented reproducibility with efficiencies up to 10.8%.
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Controlling the interparticle spacing of Au-salt loaded micelles and Au nanoparticles on flat surfaces.
Joachim Bansmann,S. Kielbassa,Harry E. Hoster,F. Weigl,Hans-Gerd Boyen,Ulf Wiedwald,Paul J. Ziemann,Rolf Jürgen Behm +7 more
TL;DR: The influence of the materials (substrate and polymer) and deposition parameters (temperature and emersion velocity) on the deposition of metal salt loaded micelles by dip-coating from solution and on the order and interparticle spacing of the micellar deposits and thus of the metal nanoparticle arrays resulting after plasma removal of the polymer shell is investigated.
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From colloidal Co/CoO core/shell nanoparticles to arrays of metallic nanomagnets: surface modification and magnetic properties.
Ulf Wiedwald,Kai Fauth,Markus Hessler,Hans-Gerd Boyen,F. Weigl,Michael Hilgendorff,Michael Giersig,Gisela Schütz,Paul J. Ziemann,Michael Farle +9 more
TL;DR: Self-assembled layers of colloidal 9.5 nm Co/CoO core/shell nanoparticles exposed to mild reactive hydrogen and oxygen plasmas transformed into an array of metallic nanomagnets with complete reduction of the oxide and removal of the organic surfactants to study the interrelation of surface chemistry and magnetism.