Authors: Hakan ÇOLAK
Publish Date: 2014/11/04
Volume: 26, Issue: 2, Pages: 784-790
Abstract
In this study Tm2O3doped ZnO powder system was synthesized in the stoichiometric range of 1–10 mol by solid state method Produced samples were characterized by XRD and monophase samples which were indexed as hexagonal wurtzite structure determined by using XRD data The limit solubility of Tm2O3 in the ZnO lattice is determined to be 4 mol after heating at 1000 °C and beyond 4 mol the impurity phase was found as cubicTm2O3 For monophase Tm2O3–ZnO binary system synthesized at 1000 °C the lattice parameters a and c increased with Tm2O3 concentration Electrical conductivity of undoped ZnO and monophase samples were measured using the four probe method The electrical conductivity values of undoped ZnO and 4 mol Tm2O3doped ZnO samples synthesized at 1000 °C were found to be 87 × 10−7 and 31 × 10−6 Ω−1 cm−1 respectively at 100 °C and 003 and 339 Ω−1 cm−1 respectively at 1000 °C Also activation energy of monophase samples synthesized at 1000 °C was calculated UV/Vis absorption and PL emission spectras of undoped and all doped ZnO samples were measured
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