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The optical absorption, Photoluminescence (PL), Thermoluminescence (TL) characterization of Zn (NO3) 26H2O doped KI single crystals prepared by slow evaporation solution growth process is reported. The PL results show the typical emission bands centered at 424 and 497 nm excited with light of 320 nm. The TL signal obtained after exposure to β and γ irradiation, indicates a high TL sensitivity of the samples and that the presence of the dopant ions induces changes in the trapping process and the charge recombination efficiency. The functional groups present in the crystal confirms that using FT-IR Technique Optical absorbance shows meagre absorption from the entire visible region. The high efficiency of the PL and TL suggests a good potential of this crystal as β and γ irradiation dosimetry as well as for photonics application.
Advances in Optoelectronic Materials – Science and Engineering Publishing Company
Published: Aug 1, 2013
Keywords: Photoluminescence; Thermoluminescence; KI and Zn (NO3)2 6H2O
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