septembre 26, 2018
Many upconversion luminescent materials emissive properties change as a function of temperature, pressure, or the presence of a chemical species. Such properties have long been exploited in the development of luminescence-based sensors. In this application note, we discuss how the use of luminescence thermometry changes the emissive properties of upconversion materials.
juillet 12, 2018
One of the most powerful techniques to understand the behaviour and performance of electrical devices is electroluminescence spectroscopy. In this application note the FLS1000 Photoluminescence Spectrometer is used to investigate the emission properties of a phosphor coated indium gallium nitride white light LED using both steady state and time-resolved electroluminescence spectroscopy.
juin 18, 2018
One of the most important photophysical parameters of perovskites for optoelectronic applications is the photoluminescence quantum yield (PLQY). In this application note the temperature dependence of the PLQY of CsPbBr3 perovskite is investigated using the FLS1000 Photoluminescence Spectrometer equipped with the Cryosphere accessory.
février 23, 2018
Halide perovskite photovoltaic cells have attracted tremendous attention over recent years due to the rapid rise achieved in solar cell efficiencies. In this application note time-resolved photoluminescence spectroscopy is shown to be a powerful tool for investigating and optimising the behaviour of halide perovskites through the measurement of charge carrier lifetimes.
décembre 12, 2017
A powerful method for determining the kinetics of a reaction is by monitoring the concentration of the reactants or products over time using stopped-flow fluorescence spectroscopy. In this application note, the kinetics of NATA quenching by QBS are determined using the FLS1000 Photoluminescence Spectrometer equipped with the stopped-flow accessory.
juin 12, 2017
Persistent luminescence, commonly called afterglow, is long-lasting visible emission over several hours after ultraviolet excitation. It has many applications; ranging from glow-in-the-dark signage to in-vivo imaging for disease diagnosis and treatment. In this application note, the persistent luminescence kinetics of a doped strontium aluminate phosphor are characterised using the FLS1000 Photoluminescence spectrometer
juin 15, 2016
In this application note the dynamics of charge carriers in copper-nitrogen-titanium oxide are studied using time-resolved photoluminescence spectroscopy on the FLS980 Photoluminescence Spectrometer
mai 2, 2016
Water in aquatic environments may consist of a complex mixture of organic compounds. This involves a continuum of natural organic matter of variable size, particulate or colloidal nature. In this application note, we present measurements of water obtained from river aquatic systems and show how fluorescence spectroscopy can easily provide initial results on the organic fingerprint of water.
février 16, 2016
Luminescent materials used in lighting are standardized by the International Commission on Illumination (CIE). This standardisation is important for the lighting industry and is based on the illuminating conditions, the brightness and the observer. In this technical note, a series of phosphors emitting across the visible range were characterised in an FS5 Spectrofluorometer and their chromaticity coordinates calculated in its integrated software package, Fluoracle®.