A high sensitivity system for luminescence measurement of materials
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A unique combined and multi-disciplinary wavelength multiplexed spectrometer is described. It is furnished with high-sensitivity imaging plate detectors, the power to which can be gated to provide time-resolved data. The system is capable of collecting spectrally resolved luminescence data following X-ray excitation [radioluminescence (RL) or X-ray excited optical luminescence (XEOL)], electron irradiation [cathodoluminescence (CL)] and visible light from light emitting diodes (LEDs) [photoluminescence (PL)]. Time-resolved PL and CL data can be collected to provide lifetime estimates with half-lives from microsecond timeframes. There are temperature stages for the high and low temperature experiments providing temperature control from 20 to 673 K. Combining irradiation, time resolved (TR) and TR-PL allows spectrally-resolved thermoluminescence (TL) and optically stimulated luminescence (OSL). The design of two detectors with matched gratings gives optimum sensitivity for the system. Examples which show the advantages and multi-use of the spectrometer are listed. Potential future experiments involving lifetime analysis as a function of irradiation, dose and temperature plus pump-probe experiments are discussed.
Finch , A A , Wang , Y , Townsend , P D & Ingle , M 2019 , ' A high sensitivity system for luminescence measurement of materials ' , Luminescence , vol. Early View . https://doi.org/10.1002/bio.3606
Copyright © 2019 John Wiley & Sons, Ltd. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1002/bio.3606
DescriptionThe authors would like to thank the support of the Fundamental Research Funds for the Central Universities of China, the National Science Foundation of China (No.11205134) and Beijing Higher Education Young Elite Teacher Project (YETP0640). The refurbishment of the RLTLCL system at St Andrews was funded by NERC grant NE/H002715/1.
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