Photoluminescence properties of PADC Irradiated with Ultraviolet Radiation of Short Wavelength (UVC)

摘要

This study sought to investigate photoluminescence (PL) emission spectra of poly allyl diglycolcarbonate (PADC) irradiated with short wavelength ultraviolet radiation of 254 nm. PADC sampleswere irradiated with UVC of 254 nm from UVC Corsslinker (Hoefer) with different doses ranging2 2 from 900 J/cm to 180000 J/cm . The photoluminescence spectra of UV-irradiated PADC weremeasured with the aid of a spectrofluorometer (FluoroMax-4). The results revealed that the UVC of254 nm induced modifications in the photoluminescence emission spectra of PADC. While the PLpeak position shows insignificant changes, FWHM of PL increased from 9.92 eV of pristine PADC to2 11.17 eV of PADC exposed to UVC dose of 900 J/cm , thereafter no significant changes wereobserved, irrespective the UVC dose. The photoluminescence peak intensity as well as the integratedphotoluminescence intensity increases when there is an increase in the UVC doses and they arelinearly correlated with UVC dose. These new findings indicate that it is possible to usephotoluminescence emission spectra of PADC in dosimetric applications for ultraviolet radiation ofshort wavelength over a wide range of doses.