Time and spatially resolved luminescence of nanomaterials Ghent University
The key luminescence properties of rare earth doped nanoparticles, embedded in a transparent matrix, are studied by means of time- resolved spectroscopey and spatially resolved cathodoluminescence in a scanning electron microscope. Variations between particles are evaluated in terms of luminescence spectrum, lifetime, effiency and energy transfer. Yhe effect of particle embedding is studied by evaluation of the particle-matrix interface.
Research into the mechanism of persistent luminescence Ghent University
The project aims at developing a general model to explain the increase of luminescent lifetime of certain hostmatrix- codopant combinations. Synthesis of a selected group of persistent materials and stydy of their structural and optical properties as a function of temperature. The model will then be tested by comparing with other materials.
Effects of particle size on the luminescence of doped semiconductors: from bulk to nano Ghent University
Luminescent materials are currently intensively used for lighting, signalling and display applications. Often, rare earth doped materials are used, for which the behaviour at a macroscopic level is well-known. The proposed fundamental research aims at the effects of the reduction of the size of the host lattice (to a nano scale) on the emission properties of the dopant ion, by evaluation of the emission spectrum, the quantum efficiency and ...
Next generation biosensors for luminescence lifetime imaging-assisted organoid engineering Ghent University
Progress in molecular imaging of tissue-engineered constructs is currently limited by the poor realisation of sensor biocompatibility (design, delivery, toxicity and performance within the biological material) and the lack of standardised well-accepted assay procedures. I will address these issues by capitalizing on my groupU+2019s recent pioneering work in luminescence lifetime imaging microscopy of tissue engineering of adult stem ...
Porous Anionic Metal-Organic Frameworks: Exhibiting Luminescence and Photocatalytic Activity by Encapsulating Metal Complexes via Post-Synthetic Ionic Exchange Ghent University
The goal of this project is to create a new generation of photocatalysts to produce chemicals and to create white LEDs by encapsulating interesting cationic complexes into negatively charged scaffolds (anionic MOFs). Metal-Organic Frameworks received a lot of attention in the last 15 years, as they are porous crystalline materials with highly tunable porosity in the nanometer range. As they are formed by a combination of inorganic bricks with ...
The continuous downscaling in photonics results in components with ever smaller dimensions that operate with ever lower power. Here, the repetitive emission and detection of individual photons constitutes the ultimate limit.
The proposed microscope is a unique setup that enables a consortium of researchers to analyse materials and devices with visible and infrared spectroscopy down to the single photon limit.
U+03BBTTL: advanced thermoluminescence spectroscopy for the study of persistent phosphors. Ghent University
Persistent phosphors are luminescent materials with the ability to emit light long after the excitation has ceased. The working mechanism of these materials is not well understood yet. This project contains the design and use of an automated, spectroscopic thermoluminescence setup. Based on the experimental results, a model (including energy level schemes) for the different classes of persistent phosphors will be constructed.