A5033620785- Quantum Dots Synthesis And Properties
- Carbon and Quantum Dots Applications
- ZnO doping and properties
- Ga2O3 and related materials
- GaN-based semiconductor devices and materials
- Chalcogenide Semiconductor Thin Films
- Solid-state spectroscopy and crystallography
- Advancements in Semiconductor Devices and Circuit Design
- Luminescence and Fluorescent Materials
- Atmospheric and Environmental Gas Dynamics
- Hydrocarbon exploration and reservoir analysis
- Nonlinear Optical Materials Research
- Atmospheric Ozone and Climate
- Nanowire Synthesis and Applications
- Electrochemical sensors and biosensors
- Spectroscopy and Laser Applications
Technische Universität Braunschweig
2017-2019
Czech Academy of Sciences, Institute of Macromolecular Chemistry
1982
We report on the surface functionalization of ZnO nanowire (NW) arrays by attachment carbon nanodots (C-dots) stabilized polyethylenimine. The photoconductive properties NWs/C-dots devices were investigated under photoexcitation with photon energies below and above band gap. results indicate an increased photoresponse functionalized in visible spectral range, as well enhanced UV photoconductivity. This is attributed to fast injection photoexcited electrons from C-dots into conduction NWs,...
In this paper, results on the optical properties and carrier dynamics in inorganic hybrid inorganic/organic semiconductor nanowire structures based ZnO GaN material systems, obtained by involved groups last years, are reviewed. First, recombination 3D GaN‐based microrod LED is analyzed discussed. particular, at high excitation densities close to damage threshold of studied. This followed a discussion functionalized with colloidal CdSe quantum dots (QDs) or carbon nanoparticles (C‐Dots)....
We report on the surface functionalization of ZnO nanowires (NWs) with specifically synthesized carbon nanodots (C-dots, CDs) that allows us to shift photoresponse NWs far into visible spectral range. modified a well-established citric acid-based synthesis protocol for C-dots by substituting commonly used aliphatic amine precursors 2,3-diaminopyridine (CDs-1) and 2,3-diaminonaphthalene (CDs-2). After functionalization, we achieve more than 100-fold increase in NW photodetectors at 2.92 eV...
In this work, a facile, easy and scalable synthetic protocol is modified at the precursor level to shift absorption of resulting carbon nanodots (C‐dots) larger wavelengths. Using knowledge about possible intermediates during solvothermal pyrolysis for predictions final products, several types variations from original mixture citric acid (CA) polyethylenimine (PEI) are being tested. Syntheses over distinct steps refined aromatic amine compounds with different size number functional groups...