Characterization of trap centers in Gd2O3 nanoparticles by low temperature thermoluminescence measurements

Date

2018-01-01

Author

Delice, S.
IŞIK, MEHMET
Hasanlı, Nızamı

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

120
views

0
downloads

Trapping centers in Gd2O3 nanoparticles were investigated using thermoluminescence (TL) measurements in the below room temperature region of 10-280 K. Seven peaks having peak maximum temperatures between 30 and 252 K were observed in the TL spectra measured at constant heating rate of 0.3 K/s. Activation energies, order of kinetics and frequency factors were reported using three different analysis techniques: curve fitting, initial rise and peak shape methods. Activation energies of the trapping centers were found between 0.012 eV and 0.79 eV. Most of the TL transitions associated with observed peaks were found as dominated by mixed order of kinetics. Structural characterization of used nanoparticles was achieved using x-ray diffraction and scanning electron microscopy experiments. (C) 2017 Elsevier GmbH. All rights reserved.

Subject Keywords

Gd2O3, Thermoluminescence, Traps

URI

https://hdl.handle.net/11511/40363

Journal

OPTIK

DOI

https://doi.org/10.1016/j.ijleo.2017.12.102

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Thermoluminescence study in Cu3Ga5S9 single crystals: Application of heating rate and T-m-T-stop methods Işık, Mehmet; Hasanlı, Nızamı; Gasanova, L. G.; Mahammadov, A. Z. (2018-07-01) Cu3Ga5S9 semiconducting single crystals were investigated using thermoluminescence (TL) measurements in 10-300 K temperature region. In the TL glow curve, one peak starting to appear at the instant temperature is increased from 10 K and another peak, which is broader than a general individual TL peak, were observed. The broad peak around 66 K was investigated using T-m-T-stop experimental method to understand whether or not this peak is composed of more than one individual peaks or continuously distributed ...
Characteristics of traps in Tl2Ga2Se3S single crystals by low-temperature thermoluminescence measurements Delice, S.; Hasanlı, Nızamı (2014-11-01) Defect characterization of Tl2Ga2Se3S single crystals has been performed by thermoluminescence (TL) measurements at low temperatures between 10 and 70K with various heating rate ranging from 0.6 to 1.0K/s. The TL signal due to the luminescence from trap centers revealed one glow peak having maximum temperature of 36K. Curve fitting and various heating rate methods were used for the analysis of the glow curve. The activation energy of 13meV was found by the application of curve fitting method. This practical...
Characteristic features of thermoluminescence in neodymium-doped gallium sulfide Güler, Işıkhan; Ahmedova, F.; Guseinov, A.; Hasanlı, Nızamı (2018-06-01) The thermoluminescence (TL) of neodymium-doped gallium sulfide (GaS:Nd) single crystals was measured from 10 K to room temperature with various heating rates between 0.2 and 1.0 K/sec. Two peaks centered at 70.9 K and 116.0 K were observed when using a heating rate of 0.8 K/sec. Initial rise and curve fitting methods were used to obtain information on trap activation energies. Activation energies of 94 and 216 meV were found for two analyzable peaks. The heating rate dependencies of TL intensities revealed ...
Photo-transferred thermoluminescence of shallow traps in beta-irradiated BeO ceramics Isik, M.; Bulur, Enver; Hasanlı, Nızamı (2017-07-01) Photo-transferred thermoluminescence signals from beryllium oxide (BeO) ceramics were measured in the low temperature range of 10-300 K. Samples irradiated at room temperature using a Sr-90/Y-19 beta source were cooled down to 10 K and trapped charges were photo-transferred at this low temperature using the light from a high power blue LED emitting at similar to 470 nm (2.6 eV). Thermoluminescence glow curve recorded at 0.2 K/s heating rate exhibited three peaks around 90, 160 and 185 K. The analyses of the...
Low-temperature thermoluminescence in TlGaS2 layered single crystals Isik, M.; Bulur, Enver; Hasanlı, Nızamı (2013-03-01) Thermoluminescence (TL) measurements have been carried out on TlGaS2 layered single crystals in the temperature range of 10-300 K. After illuminating with blue light (similar to 470 nm) at 10 K, TL glow curves exhibited peaks around 23, 36, 58, 75 and 120 K when measured with a heating rate of 0.8 K/s. The observed peaks were analyzed using curve fitting, initial rise, and peak shape methods to determine the activation energies of the associated defect centers. Analyses have revealed the presence of five de...

Citation Formats

S. Delice, M. IŞIK, and N. Hasanlı, “Characterization of trap centers in Gd2O3 nanoparticles by low temperature thermoluminescence measurements,” OPTIK, pp. 237–242, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40363.