KINETIC CHARACTERIZATION OF GAG:CE PHOSPHOR
Articles > Article · 2017
Authors: Arzu EGE, Sİbel UYSAL SATILMIŞ, Levent TÜRKLER, Zekai TEK, Elisabeth Jeanne POPOVICI
Kırklareli Üniversitesi Mühendislik ve Fen Bilimleri Dergisi, National Refreed University Journal, National, Index Copernicus, 2017, vol 3, pp 95-106
Summary
<p style="text-align:justify">Thermoluminescence (TL) kinetic characterization of cerium (Ce<span style="font-size:9.45px">3+</span>) doped <span style="color:rgb(0, 0, 0)">gadolinium aluminum garnet (GAG) prepared by wet chemical </span>synthesis<span style="color:rgb(0, 0, 0)"> method</span> are presented in this study<span style="color:rgb(0, 0, 0)">. </span>Thermoluminescence glow curve of GAG phosphor after UV irradiated has two peaks at about 350 and 501 K with a heating rate of 2 Ks<span style="font-size:9.45px">-1</span>.<span style="color:rgb(0, 0, 0)"> </span>Thermoluminescence kinetic parameters such as order of kinetics, frequency factor and activation energy associated with the main glow peak of the GAG:Ce phosphor have been calculated using various heating rates (VHR) computerized glow curve deconvulation (CGCD) and peak shape (PS) methods in this study. The activation energies obtained by VHR, PS and CGCD methods are calculated to be 1.24, 1.11 and 1.14 eV, respectively. The frequency factors attained by these methods were found as 3.41x10<span style="font-size:9.45px">11</span>, 1.80x10<span style="font-size:9.45px">10</span> and 2.63x10<span style="font-size:9.45px">10</span> s<span style="font-size:9.45px">-1</span>, respectively. Results acquired using all methods are discussed and compared.</p>