128 citations · 384 across the 17 of their papers we have counts for
17 papers
Fuzzy band structure of quantum dots by Bloch Orbital Expansion, unconventional insights into geometry-electronic structure relations
Zeger Hens, Jordi Llusar, Ivan Infante
The extension of ab-initio methods like density functional theory (DFT) to quantum dot (QD) geometries has enabled researchers to explore relationships between QD surface terminati…
Interfacial Reconstructions and Engineering in III-V@II-VI Core-Shell Quantum Dots
Jordi Llusar, Abdessamad El Adel, Luca De Trizio +3
In core/shell quantum dots (QDs), the interface between semiconductors of different chemical character largely determines their optoelectronic properties. In III-V/II-VI systems, t…
Vanishing quantum confinement enables bright and thermally excited multi-carrier emission from semiconductor nanocrystals
Tjom Arens, Sander J. W. Vonk, A. Willem Vlasblom +5
Recently, nanocrystals in the regime of vanishing quantum confinement-termed bulk nanocrystals (BNCs)-have demonstrated remarkable optical gain characteristics. While their high-po…
Direct observation of the exciton polaron by serial femtosecond crystallography on single CsPbBr quantum dots
Zhou Shen, Margarita Samoli, Onur Erdem +28
The outstanding opto-electronic properties of lead halide perovskites have been related to the formation of polarons. Nevertheless, the observation of the atomistic deformation bro…
Hot-carrier trapping preserves high quantum yields but limits optical gain in InP-based quantum dots
Sander J. W. Vonk, P. Tim Prins, Tong Wang +10
Indium phosphide is the leading material for commercial applications of colloidal quantum dots. To date, however, the community has failed to achieve successful operation under str…
A silicon photonics waveguide-coupled colloidal quantum dot photodiode sensitive beyond 1.6 um
Chao Pang, Yu-Hao Deng, Ezat Kheradmand +6
Silicon photonics faces a persistent challenge in extending photodetection capabilities beyond the 1.6 um wavelength range, primarily due to the lack of appropriate epitaxial mater…
A Roadmap to Decipher Ultrafast Photophysics in Two-Dimensional Nanomaterials
Pieter Schiettecatte, Zeger Hens, Pieter Geiregat
Atomically thin two-dimensional (2D) semiconductors are extensively investigated for opto-electronic applications that require strong light-matter interactions. In view of such app…
Zero-threshold optical gain in electrochemically doped nanoplatelets and the physics behind it
Jaco J. Geuchies, Robbert Dijkhuizen, Marijn Koel +5
Colloidal nanoplatelets (NPLs) are promising materials for lasing applications. The properties are usually discussed in the framework of 2D materials, where strong excitonic effect…
Generating Triplets in Organic Semiconductor Tetracene upon Photoexcitation of Transition Metal Dichalcogenide ReS
Sourav Maiti, Deepika Poonia, Pieter Schiettecatte +4
We studied the dynamics of transfer of photoexcited electronic states in a bilayer of the two-dimensional transition metal dichalcogenide ReS and tetracene, with the aim to pro…
Unraveling the Photophysics of Liquid-Phase Exfoliated Two-Dimensional ReS2 Nanoflakes
Pieter Schiettecatte, Deepika Poonia, Ivo Tanghe +6
Few-layered transition metal dichalcogenides (TMDs) are increasingly popular materials for optoelectronics and catalysis. Amongst the various types of TMDs available today, rhenium…
On-Chip Integrated Quantum-Dot Silicon-Nitride Microdisk Lasers
Weiqiang Xie, Thilo Stöferle, Gabriele Rainò +8
Hybrid SiN-QD microlasers coupled to a passive SiN output waveguide with 7μm diameter and record low threshold density of 27 μJ cm-2 are demonstrated. A new design and unique proce…
Nearly Blinking-Free, High-Purity Single-Photon Emission by Colloidal InP/ZnSe Quantum Dots
Vigneshwaran Chandrasekaran, Mickaël D. Tessier, Dorian Dupont +3
Colloidal core/shell InP/ZnSe quantum dots (QDs), recently produced using an improved synthesis method, have a great potential in life-science applications as well as in integrated…
Exciton spin dynamics and photoluminescence polarization of CdSe/CdS dot-in-rod nanocrystals in high magnetic fields
B. Siebers, L. Biadala, D. R. Yakovlev +4
The exciton spin dynamics and polarization properties of the related emission are investigated in colloidal CdSe/CdS dot-in-rod (DiR) and spherical core/shell nanocrystal (NC) ense…
Quantum Rod Emission Coupled to Plasmonic Lattice Resonances: A Collective Directional Source of Polarized Light
S. R. K. Rodriguez, G. Lozano, M. A. Verschuuren +7
We demonstrate that an array of optical antennas may render a thin layer of randomly oriented semiconductor nanocrystals into an enhanced and highly directional source of polarized…
Coherent absorption and enhanced photoluminescence in thin layers of nanorods
Giuseppe Pirruccio, Gabriel Lozano, Yichen Zhang +4
We demonstrate a large light absorptance (80%) in a nanometric layer of quantum dots in rods (QRs) with a thickness of 23 nm. This behavior is explained in terms of the coherent ab…
Near-Field Resonance at Far-Field Anti-Resonance: Plasmonically Enhanced Light Emission with Minimum Scattering Nanoantennas
S. R. K. Rodriguez, O. T. A. Janssen, G. Lozano +3
We demonstrate that a periodic array of optical antennas sustains a resonant Near-Field (NF) and an anti-resonant Far-Field (FF) at the same energy and in-plane momentum. This phen…
Non-equilibrium Thermodynamics approach to Transport Processes in Gas Mixtures
Z. Hens, X. de Hemptinne
The thermodynamic approach to non-equilibrium dynamics describes the state of macroscopic systems by means of a collection of intensities or intensive variables. The latter are by…