Effect of Boron Doping on Phase Stability of SrAl2O4: Eu+2, Dy+3 Nanofibers

Year 2019, Issue 16, 16 - 25, 31.08.2019

Atilla EVCİN

https://doi.org/10.31590/ejosat.497884

Cited By: 1

Abstract

In this study, three varied groups as pristine, europium and dysprosium doped SrAl2O4 and boron doped SrAl2O4:Eu2+, Dy3+ phosphorus materials were prepared. To see the effect of boron additive on phase stability of nanofibers, different ratios of boron were added. In the experimental studies, as process variables during the electrospinning method; the effect of the applied voltage, the distance between the syringe needle and collector plate were examined. The characterization of phosphorescence samples was carried out with DSC/TG, XRD and SEM. As a result of XRD analysis of the synthesized powders the structure was observed to be in monoclinic SrAl2O4 form in the pristine and Eu-Dy doped samples and turn into orthorhombic crystal-structured Sr4Al14O25 structure. Through examining the SEM photos of nanofibers, its observed that boron additive has a significant effect on nanofiber structure and with the increase in the boron amount, much order and much small-diameter nanofibers occur. Consequently, it is determined that boron additive has a significant effect on thermal, mineralogical and morphological properties of SrAl2O4: Eu, Dy structure.

Keywords

Luminescence, Nanofiber, Electrospinning, Sol-gel

SrAl2O4: Eu+2, Dy+3 Nanoliflerin Faz Kararlılığı Üzerine Bor Katkısının Etkisi

Abstract

Bu çalışmada, katkısız, europyum ve disprosyum katkılı SrAl₂O₄ ve bor katkılı SrAl₂O₄: Eu²⁺, Dy³⁺ fosfor malzemeleri olmak üzere üç farklı grup hazırlanmıştır. Bor katkısının nanoliflerin faz stabilitesi üzerindeki etkisini görmek için farklı oranlarda bor eklenmiştir. Deneysel çalışmalarda elektroeğirme yönteminde süreç değişkenleri olarak; uygulanan voltajın etkisi, şırınga iğnesi ve toplayıcı plaka arasındaki mesafe incelenmiştir. Fosforesan örneklerinin karakterizasyonu, DSC/TG, XRD ve SEM ile gerçekleştirilmiştir. Sentezlenen tozların XRD analizi sonucunda, yapının katkısız ve Eu-Dy katkılı numunede monoklinik SrAl₂O₄ formunda olduğu ve ortorombik kristal yapılı Sr₄Al₁₄O₂₅ yapısına dönüştüğü gözlemlenmiştir. Nanoliflerin SEM fotograflarını inceleyerek, bor katkısının nanolif  yapı üzerinde önemli bir etkiye sahip olduğunu ve bor miktarındaki artışı, daha düzenli ve daha küçük çaplı nanoliflerin meydana geldiği gözlemlenmiştir. Sonuç olarak, bor katkısının SrAl₂O₄: Eu, Dy yapısının termal, mineralojik ve morfolojik özellikleri üzerinde önemli bir etkisi olduğu belirlenmiştir.

Keywords

Lüminesans, Nanolif, Elektroeğirme, Sol-jel

References

• Chang C K, Jiang L, Mao D L, Feng C L. “Photoluminescence of 4SrO·7Al2O3 ceramics sintered with the aid of B2O3”. Ceramics International, 30, 285–290, 2004
• Lin Y, Tang Z, Zhang Z.” Preparation of Long-Afterglow Sr4Al14O25-Based Luminescent Material and Its Optical Properties”. Materials Letters, 51, 14–18, 2001
• Chang C, Yuan Z, Mao D. “Eu2+ activated long persistent strontium aluminate nano scaled phosphor prepared by precipitation method”. Journal of Alloys and Compounds, 415, 220–224, 2006.
• Nakauchi D, Okada G, Masanori K, Kawano N, Kawaguchi N, Yanagida T. “Photoluminescence and scintillation properties of Eu-doped strontium aluminate crystals”. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, article in press, 2018.
• Hu X, Yang H, Guo T, Shu D, Shan W, Li G, Guo D. “Preparation and properties of Eu and Dy co-doped strontium aluminate long afterglow nanomaterials”. Ceramics International, 44, 7, 7535-7544, 2018.
• Yadav RS, Rai SB. Corrigendum to: “Frequency upconversion and downshifting emissions in solution combustion derived Yb3+, Pr3+ co-doped strontium aluminate nano-phosphor: A multi-modal phosphor”. Journal of Luminescence, 199, 528, 2018.
• García CR, Oliva J, Arroyo A, Garcia-Lobato MA, Gomez-Solis C, Diaz Torres LA. “Photocatalytic activity of bismuth doped SrAl2O4 ceramic powders”. Journal of Photochemistry and Photobiology A: Chemistry, 351, 245-252, 2018
• Lai TT, Chang C, Yang CY, Das S, Lu CH. “Influence of Bi2O3 flux in the structural and photoluminescence properties of SrAl2O4:Eu2+ phosphors”. Ceramics International, 39, 159–163, 2013.
• Kim B J, Hasan Z, Kim J K. “Synthesis and characterization of long persistence Sr4Al14O25:Eu2+, Dy3+phosphor prepared by combustion method”. Journal of Ceramic Processing Research., 14, 601–605, 2013.
• Nag A, Kutty T R N,. “The mechanism of long phosphorescence of SrAl2− xBxO4 (0< x< 0.2) and Sr4Al14− xBxO25 (0.1< x< 0.4) co-doped with Eu2+ and Dy3+”. Materials Research Bulletin, 39, 331–342, 2004.
• Smets S, Rutten J, Hoeks G, Verlijsdonk J. “2SrO · 3Al2O3 : Eu2 + and 1.29 (Ba , Ca)  O  , 6Al2O3 : Eu2 + Two New Blue‐Emitting Phosphors Journal of The Electrochemical Society, 136, 2119–2123, 1989.
• Shafia E, Bodaghi M, Esposito S, Aghaei A. “A critical role of pH in the combustion synthesis of nano-sized SrAl 2 O 4: Eu 2+, Dy 3+ phosphor”. Ceramics International 40, 4697–4706, 2014.
• Liu Y, Lei B, Shi C.” Luminescent properties of a white afterglow phosphor CdSiO3:Dy3+”. Chemistry of Materials, 17, 2108–2113, 2005.
• Nag A, Kutty T R N. “Role of B2O3 on the phase stability and long phosphorescence of SrAl2O4:Eu, Dy”. Journal of Alloys and Compounds, 354, 221–231, 2003.
• Hernández-Alvarado GJ, Montemayor SM, Moggio I, Arias E, Trujillo-Vázquez E, Díaz-Guillén JA, Ávila-Orta CA, Rodríguez-Fernández OS. Synthesis at room atmosphere conditions of phosphorescent emitter SrAl2O4:Eu,Dy“. Ceramics International, 44, 11, 12789-12796, 2018.
• Xiao Q, Xiao L, Liu Y, Chen X, Li Y. “Synthesis and Luminescence Properties of Needle-Like SrAl2O4: Eu, Dy Phosphor via a Hydrothermal Co-Precipitation Method”. Journal of Physics and Chemistry of Solids, 71, 1026–1030, 2010.
• Lu Y, Li Y, Xiong Y, Wang D, Yin Q. “SrAl2O4: Eu2+, Dy3+ phosphors derived from a new sol–gel route”. Microelectronics Journal, 35, 379–382, 2004.
• Chen I-C, Chen T M. “Sol-gel synthesis and the effect of boron addition on the phosphorescent properties of SrAl2O4 Eu2+,Dy3+phosphors”. Journal of Materials Research, 16, 644-651, 2001.
• Lin Y, Zhang Z, Tang Z, Zhang J, Zheng Z, Lu X. “The characterization and mechanism of long afterglow in alkaline earth aluminates phosphors co-doped by Eu2O3 and Dy2O3”. Materials Chemistry and Physics, 70, 156–159, 2001.
• Jia W, Yuan H, Lu L, Liu H, Yen W M.” Phosphorescent dynamics in SrAl2O4: Eu2+, Dy3+ single crystal fibers”. Journal of Luminescence, 76–77, 424–428, 1998
• Evcin A. and Ekşi F. “SiO2 doped Carbon Nanofiber by Electrospinning” AIP Conference Proceedings 2042, 020002 (2018)
• Bezir N Ç, Evcin A, Kayalı R, Kaşıkçı Özen M, Oktay A. Investigation of structural, electronic and optical properties of Ag-doped TiO2 nanofibers fabricated by electrospinning”. Crystal Research and Technology, 51, 65–73, 2015.
• Chang Y L, Hsiang H I, Liang M T.”Characterizations of Eu, Dy co-doped SrAl2O4 phosphors prepared by the solid-state reaction with B2O3 addition". Journal of Alloys and Compounds, 461, 598 603, 2008.
• Niittykoski J., Aitasalo T., Hölsä J., Jungner H., Lastusaari M., M. Parkkinen, M. Tukia.” Effect of boron substitution on the preparation and luminescence of Eu2+ doped strontium aluminates”. Journal of Alloys and Compounds, 374, 108–111, 2004.
• Arıkan M O, Synthesis Of Strontium Aluminate Based Phosphorescence Material By Solid State Reaction Method, MSc Thesis, Istanbul Technical University, Istanbul, Turkey, 2010.
• Karakaş C., Synthesis Of Strontium Aluminates Phosphorescence Material By Modified Sol-gel Process, MSc Thesis, Istanbul Technical University, Istanbul, Turkey, 2010.
• Sasaki T, Fukushima J, Hayashi Y, Takizawa H, Synthesis and photoluminescence properties of a novel Sr2Al6O11:Mn4+ red phosphor prepared with a B2O3 flux, Journal of Luminescence, 194, 446-451,2018.
• Luitel H N, Preparation and Properties of Long Persistent Sr4Al14O25 Phosphors Activated by Rare Earth Metal Ions, PhD Thesis, Saga University, Saha, 2010.
• Luitel H N, Watari T, Chand R, Torikai T, Yada M, Giant improvement on the afterglow of Sr4Al14O25: Eu2+, Dy3+ phosphor by systematic investigation on various parameters, Journal of Materials, 2013, 1-10, 2013.
• Thompson N, An Approach to the Synthesis of Strontium Aluminate Based Nanophosphors, PhD Thesis, RMIT University, Melbourne, 2007.
• Rojas-Hernandez RE, Rubio-Marcos F, Rodriguez MA, Fernandez JF. ” Long lasting phosphors: SrAl2O4:Eu, Dy as the most studied material”. Renewable and Sustainable Energy Reviews, 81, 2759-277, 2018.