The Role of Eu3+ Ion on Luminescence, TL Kinetic Parameter and Electrochemical Behaviors of Sr0,5Ca0,5WO4 Phosphor Synthesized via Sol-Gel Technique

Year 2021, Volume: 8 Issue: 1, 254 - 267, 31.01.2021

Mehmet İsmail Katı İlker Çetin Keskin Murat Türemiş Ahmet Çetin Rana Kibar

https://doi.org/10.31202/ecjse.833068

Abstract

The Eu3+doped Sr0,5Ca0,5WO4 has been synthesized by the sol-gel method for the first time. The phosphors were analyzed by XRD, SEM, DTA/TG optical absorption spectra, radioluminescence (RL), photoluminescence (PL), and thermoluminescence (TL) spectra. The energy transfer mechanism was determined on Eu3+ doped Sr0,5Ca0,5WO4 phosphor. The XRD results reveal that the samples exhibit a tetragonal scheelite structure. FT-IR spectra provide the proof of scheelite structure with W-O anti-symmetric stretching vibration in [WO4]2- tetrahedrons at 750-910 cm-1. The Sr0,5Ca0,5WO4 phosphor showed a broad emission between 350-750 nm with a maximum of 506 nm. Sr0,5Ca0,5WO4:0.5Eu3+ phosphor exhibit characteristic emissions of Eu+3 (545, 592, 614, 650, and 700 nm) in the RL spectrum. The host material has excellent energy transfer efficiency for lanthanide ions. The kinetic parameters were calculated by the computerized glow curve deconvolution (CGCD) analysis method. As a result of CGCD, three peaks (Etrap:0.74-1.46 eV) for un-doped Sr0,5Ca0,5WO4 and five peaks (Etrap:0.75-1.28 eV) for Sr0,5Ca0,5WO4: Eu3+ were determined under main TL glow curve. In the cyclic voltammogram of the doped sample, an oxidation peak of about -0.4 eV, which is thought to be derived from Eu3+, was observed. Based on the results, the Sr0,5Ca0,5WO4:Eu+3 phosphors may be potential applicants for LEDs.

Keywords

Kinetic parameters, luminescence, rare earth doping, sol-gel method

Sol-Jel Tekniği ile Sentezlenmiş Sr0,5Ca0,5WO4 Fosforunda Eu3+ İyonunun Lüminesans, TL Kinetik Parametreler ve Elektrokimyasal Davranışındaki Rolü

Abstract

Eu3+katkılandırılmış Sr0,5Ca0,5WO4 sol-jel method ile ilk kez sentezlenmiştir. Forsforların DTA/TG, XRD, SEM, optik absorpsiyon, fotolüminesans (PL), radyolüminesans (RL) ve termolüminesans (TL) teknikleriyle analiz edilmiştir. Enerji transfer mekanizması Eu3+ katkılı fosfor için belirlenmiştir. XRD sonuçları örneklerin tetragonal şelit yapıda olduğu ortaya koymaktadır. RL spektrumlarında Sr0,5Ca0,5WO4 fosforu 350-750 nm aralığında 506 nm zirve yapan geniş bir emisyon bandı göstermiştir ve Sr0,5Ca0,5WO4:0.5Eu3+ fosofru Eu+3 iyonunun karakteristik (545, 592, 614, 650, and 700 nm) geçişlerini göstermiştir. Kinetik parametrelerin hesaplanmasında bilgisayarlı ışıma eğrisi ayrıştırma (CGCD) metodu kullanılmıştır. CGCD sonuçları, ana TL ışıma eğrilerinde Sr0,5Ca0,5WO4 örneği için üç ve Sr0,5Ca0,5WO4: Eu3+ fosforu için beş pik belirlenmiştir. Katkılandırılmış örneğin döngüsel voltamogramında Eu3+ dan kaynaklandığı düşünülen yaklaşık -0.4 eV’ lik bir oksidasyon zirvesi gözlendi. Bu sonuçlar temelinde Sr0,5Ca0,5WO4:Eu+3 fosforları ışık yayan diyot uygulamarı için potansiyel oluşturabilirler.

Keywords

kinetik parametre, lüminesans, nadir toprak doplama, sol-jel metodu

References

• [1] Pekgözlü,İ. Erdoğmuş, E. Yılmaz, M. Synthesis and photoluminescence properties of Li4SrCa(SiO4)2: M (M: Pb2+ and Bi3+), Journal of Luminescence. 161 (2015) 160–163. doi:10.1016/J.JLUMIN.2015.01.009.
• [2] Keskin,İ.Ç. Gültekin,S. Katı,M.İ. Türemiş M., K. Ay, Y. Arslanlar, A. Çetin, R. Kibar, Structural, optical, luminescence properties and energy transfer mechanism of Tb3+/Eu3+co-doped SrLa2(MoO4)4 phosphors produced by sol-gel process, Journal of Alloys Compounds. 789 (2019) 932–940. doi:10.1016/J.JALLCOM.2019.03.153.
• [3] Su,Y. L. Li, G. Li, Synthesis and Optimum Luminescence of CaWO 4 -Based Red Phosphors with Codoping of Eu 3+ and Na +, Chemistry and Materials. 20 (2008) 6060–6067. doi:10.1021/cm8014435.
• [4] He,X. Guan,M. N. Lian, J. Sun, T. Shang, Synthesis and luminescence characteristics of K2Bi(PO4)(MO4):Eu3+(M = Mo,W) red-emitting phosphor for white LEDs, Journal of Alloys Compounds. 492 (2010) 452–455. doi:10.1016/J.JALLCOM.2009.11.138.
• [5] Cao,F. Tian,Y. Y. Chen, L. Xiao, Q. Wu, Novel red phosphors for solid-state lighting: Ca0.54Sr0.34–1.5xEu0.08Lax (MoO4)y(WO4)1−y, Journal of Alloys Compounds. 475 (2009) 387–390. doi:10.1016/J.JALLCOM.2008.07.026.
• [6] Lei,F. Yan,B. Morphology-Controlled Synthesis, Physical Characterization, and Photoluminescence of Novel Self-Assembled Pomponlike White Light Phosphor: Eu 3+ -Doped Sodium Gadolinium Tungstate, Journal of Physics and Chemistry C. 113 (2009) 1074–1082. doi:10.1021/jp8082634.
• [7] Jia,G. Wang, C. Xu,S. Local Site Symmetry Determination of Scheelite-Type Structures by Eu 3+ Spectroscopy, Journal of Physics and Chemistry C. 114 (2010) 17905–17913. doi:10.1021/jp1077054.
• [8] Lıao,j. You,H. Zhang,S. Jıang,J. Qıu,B. Huang,H. h. wen, Synthesis and luminescence properties of BaWO4:Pr3+ microcrystal, Journal Rare Earths. 29 (2011) 623–627. doi:10.1016/S1002-0721(10)60510-8.
• [9] Haque,M.M. Lee,H.-I. Kim,D.-K. Luminescent properties of Eu3+-activated molybdate-based novel red-emitting phosphors for LEDs, Journal of Alloys Compounds. 481 (2009) 792–796. doi:10.1016/J.JALLCOM.2009.03.083.
• [10] Koçak,S. Aslişen,B. Hydrazine oxidation at gold nanoparticles and poly(bromocresol purple) carbon nanotube modified glassy carbon electrode, Sensors Actuators, B Chemistry 196 (2014) 610–618. doi:10.1016/j.snb.2014.02.061.
• [11] Pereira,P.F.S. Nogueira,I.C. Longo, E. Nassar E.J., Rosa,I.L.V. Cavalcante,L.S. Rietveld refinement and optical properties of SrWO4:Eu3+ powders prepared by the non-hydrolytic sol-gel method, Journal of Rare Earths. 33 (2015) 113–128. doi:10.1016/S1002-0721(14)60391-4.
• [12] Xie,Y. Yang,H. Zeng,K. Zhu,Y. J. Hu, Q. Mao, Q. Liu, H. Chen, Study on CO2 gasification of biochar in molten salts: Reactivity and structure evolution, Fuel. 254 (2019) 115614. doi:10.1016/J.FUEL.2019.06.022.
• [13] Reis,J. V. Pereira,T.C.P. T. Teles,H.A. França, AB J. Bellido,D.A. Naves,F.L. Baston, EP Synthesis of CeNb3O9 perovskite by Pechini method, Materials and Letters. 227 (2018) 261–263. doi:10.1016/J.MATLET.2018.05.093.
• [14] Romčević N,. Stojanović,D. Romčević,M. Khokhlov,D.R. Far-infrared and galvanomagnetic study of gallium doped PbTe, Journal of Alloys Compounds. 460 (2008) 13–19. doi:10.1016/J.JALLCOM.2007.05.079.
• [15] Aleshin,D.K. Mashkovtsev,M.A. Kuznetsova,Y.A. Rychkov,V.N. Zatsepin,A.F. Gordeev,E. V. Fabrication of (Y0.95Eu0.05)2O3 phosphors with enhanced properties by co-precipitation of layered rare-earth hydroxide, Journal of Alloys Compounds. (2019). doi:10.1016/J.JALLCOM.2019.07.046.
• [16] Gültekin,S. Yıldırım,S. Yılmaz,O. Keskin,İ.Ç. Katı,M.İ. Çelik,E. Structural and optical properties of SrAl2O4: Eu2+/Dy3+ phosphors synthesized by flame spray pyrolysis technique, Journal of Luminescence. 206 (2019) 59–69. doi:10.1016/J.JLUMIN.2018.10.011.
• [17] Keskin İ.Ç., Türemiş M., Katı M.İ., Kibar R., K. Şirin, M.A. Çipiloğlu, M. Kuş, S. Büyükçelebi, A. Çetin, The radioluminescence and optical behaviour of nanocomposites with CdSeS quantum dot, Journal of Luminescence. 185 (2017). doi:10.1016/j.jlumin.2016.12.048.
• [18] Aslışen,B. Koçak,Ç.C. Koçak,S. Electrochemical Determination of Sesamol in Foods by Square Wave Voltammetry at a Boron-Doped Diamond Electrode, Analytical Letters. 53 (2020) 343–354. doi:10.1080/00032719.2019.1650752.
• [19] Yildirim,S. Yurddaskal,M. Dikici,T. Aritman,I. Ertekin,K. Celik,E. Structural and luminescence properties of undoped, Nd3+ and Er3+ doped TiO2 nanoparticles synthesized by flame spray pyrolysis method, Ceramic International. 42 (2016) 10579–10586. doi:10.1016/j.ceramint.2016.03.131.
• [20] Huang,Z. Nie,Z. Xie,M. Wang,Y. D. Li, Excellent optical thermometry based on upconversion emission in SrMoO4:Er3+ phosphor, Optic Materials Express. 7 (2017) 2404. doi:10.1364/OME.7.002404.
• [21] Çetin, A. Keskin,İ.Ç. Katı,M.İ. Türemiş, M. Taştekin, B. Çipiloğlu, M.A. Kibar, R. The Investigation of Kinetic Characterization of Sea Salt via Thermoluminescence Method Celal Bayar University Journal of Science 13 (2017). doi:10.18466/cbayarfbe.370366
• [22] Han,Y. Wang, X. Li,S. Ma,X. Synthesis of terbium doped calcium phosphate nanocrystalline powders by citric acid sol–gel combustion method, Journal of Sol-Gel Science Technology. 49 (2009) 125–129. doi:10.1007/s10971-008-1832-y.
• [23] Keskin,İ.Ç. Katı,M.İ. Türemiş,M. Gültekin,S. Üstün,S. Çetin,A. Kibar,R. X-ray irradiated thermo- and radioluminescence, structural and thermal characterization of septarian (powder&bulk) from Madagascar, Optic Materials (Amst). 83 (2018) 176–181. doi:10.1016/J.OPTMAT.2018.06.005.
• [24] Thongtem,T. Phuruangrat,A. Thongtem,S. Preparation and characterization of nanocrystalline SrWO4 using cyclic microwave radiation, Current Applied Physics 8 (2008) 189–197. doi:10.1016/j.cap.2007.08.002.
• [25] Phuruangrat,A. Thongtem,T. Thongtem,S. Synthesis, characterisation and photoluminescence of nanocrystalline calcium tungstate, Journal of Experimental Nanoscience. 5 (2010) 263–270. doi:10.1080/17458080903513276.
• [26] Zhang,Y. A Abraha,. Zhang,R. Shahbazyan,T. Fadavi,M Heydari,. E. Dai,Q. Luminescence properties of CaWO4 and CaWO4:Eu3+ nanostructures prepared at low temperature, Optical Materials (Amst). 84 (2018) 115–122. doi:10.1016/j.optmat.2018.06.062.
• [27] Katı, M.İ. Sam, G. Keskin, İ.Ç. Türemiş, M. Çetin, A. Kibar, R. Pembe Spodümenin Termolüminesans Özelliklerinin İncelenmesi ve Kinetik Parametrelerinin Hesaplanması, El-Cezeri Fen ve Mühendislik Derg. 3 (2016) 258–271. doi:10.31202/ecjse.264189.
• [28] Katı, M.İ. Kadiroğulları, K. Türemiş, M. Keskin, İ.Ç. Çetin, A. Kibar, R. The Investigation of Thermoluminescence Properties of Tooth Enamel, El-Cezeri Fen ve Mühendislik Derg. 3 (2016) 297–303. doi:10.31202/ecjse.264193.
• [29] Tauc, J. Optical properties and electronic structure of amorphous Ge and Si, Materials Research Bullutein. 3 (1968) 37–46. doi:10.1016/0025-5408(68)90023-8.
• [30] Tirumalareddygari,S.R. Guddeti,P.R. Ramakrishna K. Reddy, T. A critical study of the optical and electrical properties of transparent and conductive Mo-doped ZnO films by adjustment of Mo concentration, Applied Surface. Science. 458 (2018) 333–343. doi:10.1016/j.apsusc.2018.07.093.
• [31] Mahalingam,V. Thirumalai,J. Krishnan,R. Mantha, S. Up/down conversion luminescence and charge compensation investigation of Ca0.5Y1−x(WO4)2:xLn3+ (Ln=Pr, Sm, Eu, Tb, Dy, Yb/Er) phosphors, Spectrochimica. Acta Part A Moleculer. Biomoleculer. Spectroscopy. 152 (2016) 172–180. doi:10.1016/j.saa.2015.06.129.