Lighting and Display Equipment
The Centre is very well equipped with precision analytical equipment. Some of this is listed below but we recommend that you visit us to fully appreciate our facilities and to discuss your particular interests.
These are used for measuring the excitation and emission spectra of materials across the UV, Visible and near IR spectral regions. We also have two integrating spheres and variable temperature capability which facilitates the calculation of luminous efficiency.
Specbos 1200 and Specbos 1201 Spectroradiometers for fast data gathering of emission spectrum, radiance, luminance etc.
Ocean Optics Spectrometer
USB Miniature Fiber Optic Spectrometer.
Photo Research PR880
Pritchard® PR-880 Automated Filter Photometer
LSI Digital Camera
This is capable of analysing screened materials for characterising uniformity and colour.
This is a very powerful technique for analysing materials that contain iron, tin, europium or antimony between the temperatures of 80K and 600K and pressure up to 10GPa. This technique provides information about the metal’s local environment (coordination state and can distinguish between crystallographic symmetry sites) and oxidation state. For more information on this technique please see these links, Royal Society of Chemistry and www.mossbauer.org. Currently three systems are operating.
0-5,000V (low voltage) CL apparatus which we use for testing phosphor used for applications such as FED, SED and VFD
5,000-25,000V including LEED, RHEED and Auger Spectroscopy capability. This apparatus is more versatile and allows us to use more specialised analytical techniques. This is most useful for surface analysis and higher voltage CL phosphors such as those used in CRTs.
In conjunction with our other apparatus we are able to characterise the cathodoluminescence properties such as luminance and emission spectrum.
Particle size analysers
Horiba LS 920 particle size analyser and auto sampler capable of characterising particle size distribution and concentration between the ranges of 20nm to 2000µm.
Sympatec particle size analyser
Absorbance and transmission modes of analysis between 200-1100nm in solution.
Perkin Elmer Fluorimeter LS5
Analysis of the fluorescence of solid samples.
Differential Scanning Callorimeters
Measures transition temperatures and heat flow. Model TA Instruments Q1000 with Tzero technology, temperature range - 170oC to 550oC.
Thermogravimetric Analysis (TGA)
Measures weight changes. Model TA Instruments Q500 with temperature range ambient to 1000oC.
Simultaneous DSC-TGA (SDT)
Measures both heat flow and weight changes in a material as a function of temperature or time in a controlled atmosphere. Model TA Instruments Q600 with temperature range ambient to 1500oC.
Mass Spectrometer (MS)
Determines the relative atomic masses of molecules and their relative abundance in a gaseous sample. Model Pfieffer Vacuum Benchtop Thermostar with a range from 1 to 300 amu.
Dynamic Mechanical Analyser (DMA)
Measures mechanical (viscoelastic) properties. Model TA Instruments Q800 with temperature range - 150oC to 600oC.
We have a large range of Carbolite and Lenton furnaces comprising of tube, ashing and muffle furnaces capable of reaching 1700oC in a purpose built furnace laboratory.
Glove boxes and inert atmosphere synthesis
Saffron Alpha Glove box and another glove box and we have extensive chemical synthetic experience in Schlenk type glassware. The Saffron glove box has recently been fully serviced and can achieve very low moisture and oxygen pressures and also has electrical feed-throughs for electroluminescence testing under controlled environments.
Screen Printing and deposition techniques
For prototype and production of screened materials we have the highly reproducible DEK247 semi-automatic screen printer able to print test areas of up to 12”x12”. We also have spin coating, K-bar and doctorblade for quick screening. Depending on the application and deposit areas we also have other techniques available within our laboratory.
In the same building as our labs is the Experimental Techniques Centre (ETC) which has TEM and SEM along with IR and surface analysis equipment. We make considerable use of their facilities and have an excellent relationship with them.