Search Results - "Geiregat, Pieter"

Highly Dynamic Ligand Binding and Light Absorption Coefficient of Cesium Lead Bromide Perovskite Nanocrystals by De Roo, Jonathan, Ibáñez, Maria, Geiregat, Pieter, Nedelcu, Georgian, Walravens, Willem, Maes, Jorick, Martins, Jose C, Van Driessche, Isabel, Kovalenko, Maksym V, Hens, Zeger

“…Lead halide perovskite materials have attracted significant attention in the context of photovoltaics and other optoelectronic applications, and recently,…”
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A bright future for colloidal quantum dot lasers by Geiregat, Pieter, Van Thourhout, Dries, Hens, Zeger

“…Given the current needs for lasers on flexible substrates or as disposable, low-cost appliances, solution-processable lasers based on tunable colloidal quantum…”
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Light Absorption Coefficient of CsPbBr3 Perovskite Nanocrystals by Maes, Jorick, Balcaen, Lieve, Drijvers, Emile, Zhao, Qiang, De Roo, Jonathan, Vantomme, André, Vanhaecke, Frank, Geiregat, Pieter, Hens, Zeger

“…Inductively coupled plasma mass spectrometry (ICP-MS) was combined with UV–vis absorption spectroscopy and transmission electron microscopy to determine the…”
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Nearly Blinking-Free, High-Purity Single-Photon Emission by Colloidal InP/ZnSe Quantum Dots by Chandrasekaran, Vigneshwaran, Tessier, Mickaël D, Dupont, Dorian, Geiregat, Pieter, Hens, Zeger, Brainis, Edouard

“…Colloidal core/shell InP/ZnSe quantum dots (QDs), recently produced using an improved synthesis method, have a great potential in life-science applications as…”
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Localization-limited exciton oscillator strength in colloidal CdSe nanoplatelets revealed by the optically induced stark effect by Geiregat, Pieter, Rodá, Carmelita, Tanghe, Ivo, Singh, Shalini, Di Giacomo, Alessio, Lebrun, Delphine, Grimaldi, Gianluca, Maes, Jorick, Van Thourhout, Dries, Moreels, Iwan, Houtepen, Arjan J., Hens, Zeger

“…2D materials are considered for applications that require strong light-matter interaction because of the apparently giant oscillator strength of the exciton…”
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On‐Chip Integrated Quantum‐Dot–Silicon‐Nitride Microdisk Lasers by Xie, Weiqiang, Stöferle, Thilo, Rainò, Gabriele, Aubert, Tangi, Bisschop, Suzanne, Zhu, Yunpeng, Mahrt, Rainer F., Geiregat, Pieter, Brainis, Edouard, Hens, Zeger, Van Thourhout, Dries

“…Hybrid silicon nitride (SiN)–quantum‐dot (QD) microlasers coupled to a passive SiN output waveguide with a 7 µm diameter and a record‐low threshold density of…”
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Phonon-Mediated and Weakly Size-Dependent Electron and Hole Cooling in CsPbBr3 Nanocrystals Revealed by Atomistic Simulations and Ultrafast Spectroscopy by Boehme, Simon C, Brinck, Stephanie ten, Maes, Jorick, Yazdani, Nuri, Zapata, Felipe, Chen, Kai, Wood, Vanessa, Hodgkiss, Justin M, Hens, Zeger, Geiregat, Pieter, Infante, Ivan

“…We combine state-of-the-art ultrafast photoluminescence and absorption spectroscopy and nonadiabatic molecular dynamics simulations to investigate…”
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Giant and Broad-Band Absorption Enhancement in Colloidal Quantum Dot Monolayers through Dipolar Coupling by Geiregat, Pieter, Justo, Yolanda, Abe, Sofie, Flamee, Stijn, Hens, Zeger

“…The absorption cross section of colloidal quantum dots in close-packed monolayers shows a 4 (CdSe) to 5-fold (PbS) enhancement compared to quantum dots in a…”
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Optical Properties of PbS/CdS Core/Shell Quantum Dots by Justo, Yolanda, Geiregat, Pieter, van Hoecke, Karen, Vanhaecke, Frank, De Mello Donega, Celso, Hens, Zeger

“…We determine the optical properties of PbS/CdS core/shell QDs, addressing the energy and the oscillator strength of the first exciton transition and the…”
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Quantum dot lasing from a waterproof and stretchable polymer film by Mohammadimasoudi, Mohammad, Geiregat, Pieter, Van Acker, Frederik, Beeckman, Jeroen, Hens, Zeger, Aubert, Tangi, Neyts, Kristiaan

“…Colloidal quantum dots (QDs) are excellent optical gain materials that combine high material gain, a strong absorption of pump light, stability under strong…”
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Coulomb Shifts upon Exciton Addition to Photoexcited PbS Colloidal Quantum Dots by Geiregat, Pieter, Houtepen, Arjan, Justo, Yolanda, Grozema, Ferdinand C, Van Thourhout, Dries, Hens, Zeger

“…Using ultrafast hyperspectral transient absorption (TA) spectroscopy, we determine the biexciton addition energies in PbS quantum dots (QDs) with different…”
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Asymmetric Optical Transitions Determine the Onset of Carrier Multiplication in Lead Chalcogenide Quantum Confined and Bulk Crystals by Spoor, Frank C. M, Grimaldi, Gianluca, Delerue, Christophe, Evers, Wiel H, Crisp, Ryan W, Geiregat, Pieter, Hens, Zeger, Houtepen, Arjan J, Siebbeles, Laurens D. A

“…Carrier multiplication is a process in which one absorbed photon excites two or more electrons. This is of great promise to increase the efficiency of…”
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A silicon photonics waveguide-coupled colloidal quantum dot photodiode sensitive beyond 1.6 µm by Pang, Chao, Deng, Yu-hao, Kheradmand, Ezat, Hagelsieb, Luis Moreno, Guo, Yujie, Cheyns, David, Geiregat, Pieter, Hens, Zeger, Van Thourhout, Dries

“…Silicon photonics faces a persistent challenge in extending photodetection capabilities beyond the 1.6 µm wavelength range, primarily due to the lack of…”
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A Phonon Scattering Bottleneck for Carrier Cooling in Lead Chalcogenide Nanocrystals by Geiregat, Pieter, Delerue, Christophe, Justo, Yolanda, Aerts, Michiel, Spoor, Frank, Van Thourhout, Dries, Siebbeles, Laurens D. A, Allan, Guy, Houtepen, Arjan J, Hens, Zeger

“…The cooling dynamics of hot charge carriers in colloidal lead chalcogenide nanocrystals is studied by hyperspectral transient absorption spectroscopy. We…”
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Sideband pump-probe technique resolves nonlinear modulation response of PbS/CdS quantum dots on a silicon nitride waveguide by Kolarczik, Mirco, Ulbrich, Christian, Geiregat, Pieter, Zhu, Yunpeng, Sagar, Laxmi Kishore, Singh, Akshay, Herzog, Bastian, Achtstein, Alexander W., Li, Xiaoqin, van Thourhout, Dries, Hens, Zeger, Owschimikow, Nina, Woggon, Ulrike

“…For possible applications of colloidal nanocrystals in optoelectronics and nanophotonics, it is of high interest to study their response at low excitation…”
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Ultrafast Carrier Dynamics in Few-Layer Colloidal Molybdenum Disulfide Probed by Broadband Transient Absorption Spectroscopy by Schiettecatte, Pieter, Geiregat, Pieter, Hens, Zeger

“…Insights into the photophysics of molybdenum disulfide (MoS2) flakes made by exfoliation or chemical vapor deposition (CVD) have advanced the use of these…”
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The Impact of Core/Shell Sizes on the Optical Gain Characteristics of CdSe/CdS Quantum Dots by Bisschop, Suzanne, Geiregat, Pieter, Aubert, Tangi, Hens, Zeger

“…Colloidal quantum dots (QDs) are highly attractive as the active material for optical amplifiers and lasers. Here, we address the relation between the…”
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Liquid-Phase Exfoliation of Rhenium Disulfide by Solubility Parameter Matching by Schiettecatte, Pieter, Rousaki, Anastasia, Vandenabeele, Peter, Geiregat, Pieter, Hens, Zeger

“…In this work, we provide a detailed account of the liquid-phase exfoliation (LPE) of rhenium disulfide (ReS2), a promising new-generation two-dimensional…”
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Using Bulk-like Nanocrystals To Probe Intrinsic Optical Gain Characteristics of Inorganic Lead Halide Perovskites by Geiregat, Pieter, Maes, Jorick, Chen, Kai, Drijvers, Emile, De Roo, Jonathan, Hodgkiss, Justin M, Hens, Zeger

“…Following the introduction of perovskites for photovoltaic solar energy conversion, the use of these materials as a general purpose optoelectronic material for…”
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Thermodynamic Equilibrium between Excitons and Excitonic Molecules Dictates Optical Gain in Colloidal CdSe Quantum Wells by Geiregat, Pieter, Tomar, Renu, Chen, Kai, Singh, Shalini, Hodgkiss, Justin M, Hens, Zeger

“…We show that optical gain in 2D CdSe colloidal quantum wells (CQWs) shows little saturation and coexists with exciton absorption over a broad range of…”
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