Trapping centers in Bi12TiO20 single crystals by thermally stimulated current

Date

2021-12-01

Author

Isik, M.
Delice, S.
Hasanlı, Nızamı
Darvishov, N.H.
Bagiev, V.E.

Metadata

Show full item record

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

Item Usage Stats

113
views

0
downloads

Sillenite group compounds have been widely utilized in photocatalytic applications. One of the member of this group, Bi12TiO20 single crystal, was grown by Czochralski method. The structural properties were investigated by x-ray diffraction (XRD) and scanning electron microscope (SEM) techniques. XRD pattern presented well-defined intensive peaks associated with cubic crystalline structure. SEM images indicated the crystal surface as almost uniform and smooth. Thermally stimulated current (TSC) experiments were performed in the 10–280 K temperature range to reveal shallow trapping centers in the Bi12TiO20 single crystal. Two peaks around 112 and 179 K were observed in the TSC glow curve. The analyses of these curves considering the curve fitting and peak shape techniques resulted in presence of two hole centers at 0.09 and 0.14 eV. Heating rate dependencies of peak maximum temperature and current were also investigated throughout the paper.

Subject Keywords

Bi12TiO20, Defects, Impurities, Sillenites, TSC

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85119936063&origin=inward
https://hdl.handle.net/11511/95397

Journal

Optical Materials

DOI

https://doi.org/10.1016/j.optmat.2021.111797

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Shallow trapping centers in Bi12GeO20 single crystals by thermally stimulated current measurements Delice, S.; Isik, M.; Hasanlı, Nızamı (2022-12-01) © 2022 Elsevier LtdBi12GeO20 single crystals were investigated by thermally stimulated current (TSC) experiments performed in the temperature range of 10–290 K. Recorded TSC glow curve exhibited six distinctive peaks with maxima at around 90, 105, 166, 209, 246, 275 K. The analyses of the obtained glow curve were accomplished by curve fitting and initial rise methods. The analysis results were in good agreement that the TSC peaks appeared in the glow curve due to existence of trapping levels with activation...
Trapping parameters of repulsive centers in SbSI single crystals Ozdemir, S; Firat, T; Mamedov, AM (Elsevier BV, 2004-06-08) Charge trapping centers in antimony sulphide iodide (SbSI) single crystals have been investigated by the use of thermally stimulated current (TSC) technique. The TSC spectrum consists of only one apparent peak which is found to be associated with a single trapping level. Those traps are experimentally found to obey the monomolecular kinetics. The trapping parameters as the energy depth, temperature dependent frequency factor and capture cross section together with the concentrations of the corresponding dis...
Polymerisation and degradation of an aromatic amine-based naphthoxazine Uyar, Tamer; Koyuncu, Zeynep; Ishida, Hatsuo; Hacaloğlu, Jale (2008-12-01) Pyrolysis mass spectrometry (MS) analysis of aromatic amine-based naphthoxazine monomer (15-Na) and Poly15-Na has been carried out. Evaporation and degradation of the monomer are detected during the curing process while the polymerisation proceeded. The polymerisation and degradation mechanisms are proposed for 15-Na and Poly15-Na, respectively. The proposed polymerisation mechanism for naphthoxazine monomer was through the aniline units either by coupling of the radicals generated by cleavage of the side r...
Synthesis, characterizations and photovoltaic applications of dithienothiophene and benzotriazole containing conjugated polymers Cevher, Şevki Can; Çırpan, Ali; Toppare, Levent Kamil; Department of Chemistry (2013) Fused bithiophene containing conjugated polymers are recently used in different applications; for example organic light emitting diodes, solar cells, electrochromic devices and organic field effect transistors. Fused bithiophene derivatives increase the planarity, charge mobility and decrease band gap when incorporated into the polymer backbone. Connecting atom between the bithiopheneunit can be phosphorous, silicon, nitrogen and sulphur. In this thesis, dihienothiophene was coupled with benzotriazole via S...
Defect characterization in Bi12GeO20 single crystals by thermoluminescence Delice, S.; Isik, M.; Sarıgül, Neslihan; Hasanlı, Nızamı (2021-05-01) Bi12GeO20 single crystal grown by Czochralski method was investigated in terms of thermoluminescence (TL) properties. TL experiments were performed for various heating rates between 1 and 6 K/s in the temperature region of 300-675 K. One TL peak with peak maximum temperature of 557 K was observed in the TL spectrum as constant heating rate of 1 K/s was employed. Curve fitting, initial rise and variable heating rate methods were applied to calculate the activation energy of trap level corresponding to this T...

Citation Formats

M. Isik, S. Delice, N. Hasanlı, N. H. Darvishov, and V. E. Bagiev, “Trapping centers in Bi12TiO20 single crystals by thermally stimulated current,” Optical Materials, vol. 122, pp. 0–0, 2021, Accessed: 00, 2022. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85119936063&origin=inward.