Thermoluminescence properties of ZnO nanoparticles in the temperature range 10-300 K

Hasanlı, Nızamı
Low-temperature thermoluminescence (TL) properties of ZnO nanoparticles grown by sol-gel method were investigated in the 10-300 K temperature range. TL glow curve obtained at 0.2 K/s constant heating rate exhibited one broad peak around 83 K. The observed peak was analyzed using curve fitting method to determine the activation energies of trapping center(s) responsible for glow curve. Analyses resulted in the presence of three peaks at 55, 85 and 118 K temperatures with activation energies of 12, 30 and 45 meV, respectively. Thermal cleaning process was applied to separate overlapped peaks and get an opportunity to increase the reliability of results obtained from curve fitting method. Heating rate dependence of glow curve was also studied for rates between 0.2 and 0.7 K/s. The shift of the peak maximum temperatures to higher values and decrease in peak height with heating rate were observed. Moreover, X-ray diffraction and scanning electron microscopy were used for structural characterization.


Thermoluminescence in gallium sulfide crystals: an unusual heating rate dependence
DELİCE, SERDAR; Bulur, Enver; Hasanlı, Nızamı (2015-03-24)
Trap centres in gallium sulfide single crystals have been investigated by thermoluminescence measurements in the temperature range of 10-230K. A curve-fitting method was utilized to evaluate the activation energies (52, 200 and 304meV) of the revealed three trap centres. The heating rate dependence and trap distribution of the peaks have been studied using experimental techniques based on various heating rates and various illumination temperatures, respectively. An anomalous heating rate dependence of the h...
Thermoluminescence in gallium sesquisulfide single crystals: usual and unusual heating rate dependencies
Güler, Işıkhan; Gasanova, L.; Mahammadov, A.; Hasanlı, Nızamı (2018-01-01)
Thermoluminescence (TL) experiments were conducted for Ga2S3 crystals to obtain information about trapping parameters. TL measurements were performed from 10 to 300 K with varying heating rates in the range of 0.2-0.8 K/s. Two TL glow peaks centered at 44K (peak A) and 91 K (peak B) were observed at heating rate of beta=0.5 K/s. For peak A, TL intensity decreased whereas that for peak B increased with elevating the heating rates that means anomalous heating rate occurred for peak B. TL glow curves were anal...
Thermoluminescence characteristics of Tl4GaIn3S8 layered single crystals
Delice, S.; IŞIK, MEHMET; Hasanlı, Nızamı (2014-01-12)
The properties of trapping centres in - as grown - Tl4GaIn3S8 layered single crystals were investigated in the temperature range of 10-300K using thermoluminescence (TL) measurements. TL curve was analysed to characterize the defects responsible for the observed peaks. Thermal activation energies of the trapping centres were determined using various methods: curve fitting, initial rise and peak shape methods. The results indicated that the peak observed in the low-temperature region composed of many overlap...
Defect characterization of Ga4Se3S layered single crystals by thermoluminescence
IŞIK, MEHMET; Delice, S.; Hasanlı, Nızamı (2016-04-01)
Trapping centres in undoped Ga4Se3S single crystals grown by Bridgman method were characterized for the first time by thermoluminescence (TL) measurements carried out in the low-temperature range of 15-300 K. After illuminating the sample with blue light (similar to 470 nm) at 15 K, TL glow curve exhibited one peak around 74 K when measured with a heating rate of 0.4 K/s. The results of the various analysis methods were in good agreement about the presence of one trapping centre with an activation energy of...
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 ...
Citation Formats
M. IŞIK, T. YILDIRIM, and N. Hasanlı, “Thermoluminescence properties of ZnO nanoparticles in the temperature range 10-300 K,” JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, pp. 76–81, 2016, Accessed: 00, 2020. [Online]. Available: