40 citations · 144 across the 13 of their papers we have counts for
14 papers
Stimulated Emission from 2D CdSe/CdS Nanoplatelets Integrated in a Liquid-Core Fiber
Veronika Adolfs, Dominik A. Rudolph, Simon Spelthann +6
Colloidal nanocrystals are unique optical gain materials due to their high intrinsic absorption, excellent quantum yield, and tunable emission. However, integration of colloidal na…
Atomistic Origin of Photoluminescence Quenching in Colloidal MoS2 and WS2 Nanoplatelets
Surender Kumar, Markus Fröhlich, Stefan Velja +8
Large chemical tunability and strong light-matter interactions make colloidal transition metal dichalcogenide (TMD) nanostructures particularly suitable for light-emitting applicat…
Monolayer-Defined Flat Colloidal PbSe Quantum Dots in Extreme Confinement
Leon Biesterfeld, Huu Thoai Ngo, Ahmed Addad +7
Colloidal two-dimensional lead chalcogenide nanocrystals represent an intriguing new class of materials that push the boundaries of quantum confinement by combining a crystal thick…
Understanding the Optoelectronic Processes in Colloidal 2D Multi-Layered MAPbBr3 Perovskite Nanosheets: Funneling, Recombination and Self-Trapped Excitons
André Niebur, Eugen Klein, Rostyslav Lesyuk +2
Quasi two-dimensional (2D) colloidal synthesis made quantum confinement readily accessible in perovskites, generating additional momentum in perovskite LED research and lasing. Ult…
Numerical Modeling of Transient Absorption in Hybrid Dual-Plasmonic Au/CuS Nanostructures
Atefeh Habibpourmoghadam, Wenyong Xie, Patrick Bessel +5
Transient absorption in plasmonic materials has recently attracted attention of the chemistry and optics communities as a technique to understand dynamic processes and hot carriers…
Solving the Synthetic Riddle of Colloidal 2D PbTe Nanoplatelets with Tunable Near-Infrared Emission
Leon Biesterfeld, Mattis T. Vochezer, Marco Kögel +7
Near-infrared emitting colloidal two-dimensional (2D) PbX (X=S, Se) nanoplatelets have emerged as interesting materials with strong size quantisation in the thickness dimension. Th…
Sub-meV Linewidths in Polarized Low-Temperature Photoluminescence of 2D PbS Nanoplatelets
Pengji Li, Leon Biesterfeld, Lars Klepzig +11
Colloidal semiconductor nanocrystals are promising materials for classical and quantum light sources due to their versatile chemistry and efficient photoluminescence (PL) propertie…
Microfluidic Filling and Spectroscopy of Colloidal CdSe/CdS Nanoplatelets in Liquid Core Fibers
Simon Spelthann, Dan Huy Chau, Lars F. Klepzig +7
Colloidal 2D semiconductor nanoplatelets are highly efficient light emitters, which exhibit large absorption and emission cross sections, and constitute promising laser gain media.…
Probing Bidirectional Plasmon-Plasmon Coupling-Induced Hot Charge Carriers in Dualplasmonic Au/CuS Nanocrystals
Patrick Bessel, André Niebur, Daniel Kranz +2
Heterostructured Au/CuS nanocrystals (NCs) exhibit localized surface plasmon resonance (LSPR) centered at two different wavelengths (551 nm and 1051 nm) with a slight broadening co…
Room Temperature Micro-Photoluminescence Studies of Colloidal WS2 Nanosheets
André Philipp Frauendorf, André Niebur, Lena Harms +5
Wet-chemical syntheses for quasi two-dimensional (2D) transition metal dichalcogenides (TMDs) have emerged as promising methods for straightforward solution-processing of these mat…
Probing Excitons in Ultrathin PbS Nanoplatelets with Enhanced Near-Infrared Emission
Francisco Manteiga Vázquez, Qianli Yu, Lars F. Klepzig +3
Strongly quantum-confined 2D colloidal PbS nanoplatelets (NPLs) are highly interesting materials for near-infrared optoelectronic applications. Here, we use ultrafast transient opt…
Photoexcitation of PbS Nanosheets Leads to Highly Mobile Charge Carriers and Stable Excitons
Jannika Lauth, Michele Failla, Eugen Klein +3
Solution-processable two-dimensional (2D) semiconductors with chemically tunable thickness and associated tunable band gaps are highly promising materials for ultrathin optoelectro…
A Dye-Sensitized CdSe Nanocrystal Optical Transistor with High ON/OFF Ratio in the First Telecom Window with 74 ns Rise Time
Krishan Kumar, Quan Liu, Jonas Hiller +5
We report an optically gated transistor composed of CdSe nanocrystals (NCs), sensitized with the dye Zinc beta-tetraaminophthalocyanine for operation in the first telecom window. T…
Virtually Bare Nanocrystal Surfaces - Significantly Enhanced Electrical Transport in CuInSe2 and CuIn(1-x)Ga(x)Se2 Thin Films upon Ligand Exchange with Thermally Degradable 1-Ethyl-5-thiotetrazole
Jannika Lauth, Jakob Marbach, Andreas Meyer +4
We present a facile and safe ligand exchange method for readily synthesized CuInSe2 (CIS) and CuIn(1-x)Ga(x)Se2 (CIGS) nanocrystals (NCs) from oleylamine to 1-ethyl-5-thiotetrazole…