H
Heinz Kalt
Researcher at Karlsruhe Institute of Technology
Publications - 435
Citations - 7676
Heinz Kalt is an academic researcher from Karlsruhe Institute of Technology. The author has contributed to research in topics: Photoluminescence & Exciton. The author has an hindex of 43, co-authored 434 publications receiving 7197 citations. Previous affiliations of Heinz Kalt include Max Planck Society & Technical University of Denmark.
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ZnO-based hollow nanoparticles by selective etching: elimination and reconstruction of metal-semiconductor interface, improvement of blue emission and photocatalysis.
TL;DR: The designed fabrication procedure is simple, feasible, and universal for a series of oxide and noble metal/oxide HNPs with controlled microstructure and improved performances.
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65 years of ZnO research – old and very recent results
Claus F. Klingshirn,J. Fallert,Huijuan Zhou,Janos Sartor,Cornelius Thiele,Florian Maier-Flaig,Daniel Schneider,Heinz Kalt +7 more
TL;DR: In this paper, a didactical review of optical properties of ZnO has been presented, focusing mainly on optical properties but presenting shortly also a few aspects of other fields like transport or magnetic properties.
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Room-temperature stimulated emission of ZnO: Alternatives to excitonic lasing
TL;DR: In this paper, the authors investigated the temperature dependence of the band gap and the homogeneous width of the free exciton resonance and presented alternative interpretations for RT stimulated emission in ZnO.
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Co-existence of strongly and weakly localized random laser modes
TL;DR: In this article, the localization of localized and extended modes of light in micro-structured ZnO powders is investigated and shown to exist simultaneously in both types of modes, which corroborates the prediction that localized modes have a lower loss rate than that of extended modes.
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Template-assisted large-scale ordered arrays of ZnO pillars for optical and piezoelectric applications.
Hong Jin Fan,Woo Lee,Robert Hauschild,Marin Alexe,Gwenael Le Rhun,Roland Scholz,Armin Dadgar,Kornelius Nielsch,Heinz Kalt,Alois Krost,Margit Zacharias,Ulrich Gösele +11 more
TL;DR: The piezoelectric and optical properties of single pillars are characterized using piezoresponse force microscopy and micro-photoluminescence spectroscopy and indicate a relatively low defect density and good crystalline quality.