Abstract
For radiation detection applications, Raman analysis, photoluminescence (PL), and UV–Vis spectroscopy are thoroughly studied using the DAM-ADC (diallyl maleate - allyl diglycol carbonate) detector coated with poly(3-hexylthiophene-2,5-diyl) (P3HT) conducting polymer. A thin Am-241 disk that emits alpha particles with an activity of 340 kBq was used to irradiate the surface of DAM-ADC detector. After irradiation with different fluencies of alpha particles, the spectroscopic analysis confirms that the effects of alpha particles on the DAM–ADC detector coated by P3HT conducting polymer are detectable in Raman spectra and PL spectral emission. Furthermore, the photoluminescence and UV–Vis responses of the DAM–ADC samples are influenced by the track density of the irradiated samples. For Raman, UV–vis, and PL analysis, the spectral peak heights and the area under the peaks show a correlation with the fluencies of alpha particles. For the irradiated samples, all the techniques displayed major spectral alterations, suggesting that they could be used to establish sensitive alpha particle detection methods. For both direct and indirect transitions, the optical band gap was found to decrease with increasing the alpha fluencies.
Published Version
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