Abstract
Scintillator materials are used to transform radiation into light. In recent years scintillator materials of small dimensions in nano-scale or quantum dots are investigated, since they exhibit increased efficiency in optical photon production. In addition, polymethyl-methacrylate (PMMA) is an easy to shape material that can be used in the form of a PMMA/scintillator compound for the detection of ultraviolet radiation. Methods: In this paper, a PMMA/[ZnCuInS/ZnS] compound is theoretically examined, via an analytical model, in terms of its optical photon output efficiency, under UV excitation. Results: Assuming exponential attenuation of the radiation in the PMMA/QD detectors, the UV attenuation coefficients were found as 0.008 cm-1, 0.036 cm-1, 0.093 cm-1 and 0.156 cm-1 for QD concentrations in the PMMA/[ZnCuInS/ZnS] compound of 25, 100, 150 and 250 mg/ml respectively. The detector thickness was not found to affect the light output efficiency significantly. Conclusions: The model predicted that the highest efficiency could be obtained by a 310 mg/ml concentration PMMA/[ZnCuInS/ZnS] thin film sample.
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