G
G. Hesser
Researcher at Johannes Kepler University of Linz
Publications - 49
Citations - 2550
G. Hesser is an academic researcher from Johannes Kepler University of Linz. The author has contributed to research in topics: Quantum dot & Photoluminescence. The author has an hindex of 21, co-authored 46 publications receiving 2290 citations.
Papers
More filters
Journal ArticleDOI
Near-infrared imaging with quantum-dot-sensitized organic photodiodes
Tobias Rauch,M. Böberl,Sandro Francesco Tedde,Jens Dr. Fürst,Jens Dr. Fürst,Maksym V. Kovalenko,G. Hesser,Uli Lemmer,Wolfgang Heiss,Oliver Hayden +9 more
TL;DR: In this article, the authors reported the fabrication and application of hybrid bulk heterojunction photodiodes containing PbS nanocrystalline quantum dots as sensitizers for near-infrared detection up to 1.8 µm.
Journal ArticleDOI
Fatty acid salts as stabilizers in size- and shape-controlled nanocrystal synthesis: the case of inverse spinel iron oxide.
Maksym V. Kovalenko,Maryna I. Bodnarchuk,Rainer T. Lechner,G. Hesser,Friedrich Schäffler,Wolfgang Heiss +5 more
TL;DR: Various oleic acid salts are demonstrated to act as stabilizers for high-quality iron oxide nanocrystals, synthesized by thermal decomposition of ferric oleate, with different degrees of dissociation at high temperatures to be obtained.
Journal ArticleDOI
Colloidal HgTe nanocrystals with widely tunable narrow band gap energies : From telecommunications to molecular vibrations
Maksym V. Kovalenko,E. Kaufmann,D. Pachinger,J. Roither,Martin Huber,Julian Stangl,G. Hesser,Friedrich Schäffler,Wolfgang Heiss +8 more
TL;DR: A convenient, aqueous-based synthesis of stable HgTe nanocrystals with widely size-tunable room temperature emission between wavelengths of 1.2 to 3.7 mum is demonstrated and the use of mercaptoethylamine as initial stabilizer is greatly improved.
Journal ArticleDOI
Infrared Emitting and Photoconducting Colloidal Silver Chalcogenide Nanocrystal Quantum Dots from a Silylamide-Promoted Synthesis
Maksym Yarema,Stefan Pichler,Mykhailo Sytnyk,Robert Seyrkammer,Rainer T. Lechner,Gerhard Fritz-Popovski,Dorota Jarzab,Krisztina Szendrei,Roland Resel,Oleksandra Korovyanko,Maria Antonietta Loi,Oskar Paris,G. Hesser,Wolfgang Heiss +13 more
TL;DR: It is concluded that the addition of lithium silylamide might generally promote wet-chemical synthesis of metal chalcogenide nanocrystals, including in as-yet unexplored materials.
Journal ArticleDOI
Mechanisms for room temperature direct wafer bonding
TL;DR: In this article, the authors developed an understanding of the beneficial surface modifications by plasma and a model based on short range low temperature diffusion through bonding experiments combined with results from spectroscopic ellipsometry, depth resolving Auger electron spectroscopy, and transmission electron microscopy measurements.