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Başlık: Cathodoluminescence and thermoluminescence of ZnB2O4:Eu3+ phosphors prepared via wet-chemical synthesis
Yazarlar: Doğan, Tamer
Cifuentes, L. Tormo
Özalp, Sibel Akça
Guinea, J. Garcia
Karabulut, Yüksel
Ayvacıklı, Mehmet
Oğlakçı, Mehmet
Topaksu, Mustafa
Can, Nurdogan
Bursa Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü.
0000-0002-9193-4591
Küçük, Nil
24436223800
Anahtar kelimeler: Materials science
Zinc borates
Rare earth
Xrd
Cathodoluminescence
Thermoluminescence
Heating rate
Kinetic-parameters
Optical-properties
Doped znb2O4
Eu3+
Luminescence
Photoluminescence
Radioluminescence
Nanophosphors
Emission
Activation energy
Cathodoluminescence
Citrus fruits
Crystal structure
Europium compounds
Lons
Phosphors
Rare earths
Synthesis (chemical)
X ray diffraction
Zinc compounds
High temperature peaks
Luminescence material
Optoelectronic applications
Orange-red emitting
Variable heating rates
Wet chemical synthesis
X-ray diffraction measurements
Zinc borate
Thermoluminescence
Yayın Tarihi: 23-Kas-2018
Yayıncı: Elsevier Science
Atıf: Doğan, T. vd. (2019). ''Cathodoluminescence and thermoluminescence of ZnB2O4:Eu3+ phosphors prepared via wet-chemical synthesis''. Ceramics International, 45(4), 4918-4925.
Özet: In present work, a series of Eu doped zinc borate, ZnB2O4, phosphors prepared via wet chemical synthesis and their structural, surface morphology, cathodoluminescence (CL) and thermoluminescence (TL) properties have been studied. Phase purity and crystal structure of as-prepared samples are confirmed by X-ray diffraction measurements (XRD) and they were well consistent with PDF card No. 39-1126, indicating the formation of pure phase. The thermoluminescence (TL) behaviors of Eu activated ZnB2O4 host lattice are studied for various beta doses ranging from 0.1 to 10 Gy. The high-temperature peak of Eu activated sample located at 192 degrees C exhibited a linear dose response in the range of 0.1-10 Gy. Initial rise (IR) and peak shape (PS) methods were used to determine the activation energies of the trapping centres. The effects of the variable heating rate on TL behaviour of Eu activated ZnB2O4 were also studied. When excited using an electron beam induced light emission (i.e cathodoluminescence, CL) at room temperature (RT), the as-prepared phosphors generate reddish-orange color due to predominant emission peaks of Eu3+ ions located at 576-710 nm assigned to the D-5(0)-> F-7(J) (J=1,2,3, and 4) transitions. The maximum CL intensity for Eu3+ ions at 614 nm with transition D-5(0)-> F-7(2) was reached Eu3+ concentration of 5 mol%; quenching occurred at higher concentrations. Strong emission peak for Eu3+ ions at 614 nm with transition D-5(0)-> F-7(2) is observed. The CL experimental data indicate that ZnB2O4:Eu3+ phosphor as an orange-red emitting phosphor may be promising luminescence materials for the optoelectronic applications.
URI: https://doi.org/10.1016/j.ceramint.2018.11.191
https://www.sciencedirect.com/science/article/pii/S027288421833308X
http://hdl.handle.net/11452/31717
ISSN: 0272-8842
1873-3956
Koleksiyonlarda Görünür:Scopus
Web of Science

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