M
Marc Achermann
Researcher at University of Massachusetts Amherst
Publications - 57
Citations - 5697
Marc Achermann is an academic researcher from University of Massachusetts Amherst. The author has contributed to research in topics: Femtosecond & Exciton. The author has an hindex of 27, co-authored 57 publications receiving 5411 citations. Previous affiliations of Marc Achermann include École Polytechnique Fédérale de Lausanne & Lucerne University of Applied Sciences and Arts.
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Journal ArticleDOI
Single-exciton optical gain in semiconductor nanocrystals
Victor I. Klimov,Sergei A. Ivanov,Jagjit Nanda,Marc Achermann,Ilya Bezel,John A. McGuire,Andrei Piryatinski +6 more
TL;DR: This work develops core/shell hetero-nanocrystals engineered in such a way as to spatially separate electrons and holes between the core and the shell (type-II heterostructures), which breaks the exact balance between absorption and stimulated emission, and allows for optical amplification due to single excitons.
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Energy-transfer pumping of semiconductor nanocrystals using an epitaxial quantum well.
Marc Achermann,Melissa A. Petruska,Šimon Kos,Darryl L. Smith,Daniel D. Koleske,Victor I. Klimov +5 more
TL;DR: The theoretical and experimental results indicate that this transfer is fast enough to compete with electron–hole recombination in the quantum well, and results in greater than 50 per cent energy-transfer efficiencies in the tested structures.
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Synthesis and Characterization of Co/CdSe Core/Shell Nanocomposites: Bifunctional Magnetic-Optical Nanocrystals
TL;DR: This work reports the synthesis and characterization of the first all-inorganic core/shell hybrid magnetic-optical nanoparticle, cobalt/cadmium selenide, and demonstrates bifunctional behavior, whereby the core retains the magnetic properties of the starting Co nanoparticles, and the shell emits similarly to a single-component CdSe nanoparticle.
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Nonequilibrium electron dynamics in noble metals
N. Del Fatti,Christophe Voisin,Marc Achermann,Stylianos Tzortzakis,Dimitris Christofilos,Fabrice Vallée +5 more
TL;DR: In this paper, two-color femtosecond pump-probe measurements in silver films were used to investigate the electron-electron and electron-lattice interactions in noble metals.
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Multicolor light-emitting diodes based on semiconductor nanocrystals encapsulated in GaN charge injection layers.
Alexander H. Mueller,Melissa A. Petruska,Marc Achermann,Donald J. Werder,Elshan A. Akhadov,Daniel D. Koleske,Mark A. Hoffbauer,Victor I. Klimov +7 more
TL;DR: The first successful demonstration of electroluminescence from an all-inorganic, nanocrystal-based architecture in which semiconductor nanocrystals are incorporated into a p-n junction formed from GaN injection layers is reported.