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We have found that the photo-luminescence peak shift observed at cryogenic temperatures is not intrinsic to polystyrene. Our data analysis indicates that the shift is most likely due to impurities.
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This page is a summary of: Temperature Dependence of Photoluminescence Spectra in Polystyrene, Materials Performance and Characterization, January 2020, ASTM International,
DOI: 10.1520/mpc20200093.
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