PRODUCTION OF Pr6O11-DOPED SrAl2O4:Eu2+, Dy3+, Y3+ YELLOWISH-GREEN PHOSPHORS AND THEIR USAGE IN ARTISTIC GLASSES

Yıl 2012, Cilt: 13 Sayı: 2, 81 - 87, 28.01.2013

Hanaa El Kazazz Erkul Karacaoğlu Bekir Karasu Mustafa Ağatekin

Öz

A phenomenon of light emission by certain materials after exposure to an excitation source is called luminescence. Long persistent phosphors are those having very long afterglow emission or phosphorescence, in some cases even longer than a whole day, and a large application fields. Afterglow is caused by trapped electrons or holes produced during the excitation. The long persistent phosphorescence mechanism of the inorganic phosphors activated by rare earth ions have been attempted to be explained by many researchers. During the last decade, the researches on the development of new persistent phosphors and the improvement of their life time have been considerably conducted. In the present study, the effects of praseodymium oxide (Pr₆O₁₁) doping in SrAl₂O₄:Eu²⁺, Dy³⁺, Y³⁺phosphor on the luminescence efficiency and phosphorescence properties were investigated. Additionally, after the production, the possible application of the most suitable pigment developed during the study onto artistic glasses was searched.

Anahtar Kelimeler

Pr6O11, Doping, SrAl2O4:Eu2+, Dy3+, Y3+ phosphor, Usage, Effect, Artistic glasses

SrAl2O4:Eu+2, Dy+3, Y+3 SİSTEMİNDE Pr6O11 KATKILI SARIMSI-YEŞİL FOSFORLARIN ÜRETİMİ VE SANATSAL CAMLARDA KULLANIMI

Öz

Bir uyarım kaynağına maruz bırakılan bazı malzemelerin kaynak uzaklaştırıldıktan sonra da ışık yayınımına devam etmeleri olayına lüminesans adı verilmektedir. Uzun ışıldama süreli fosforlar, çok geniş bir zaman diliminde, hatta bazen bütün bir gün boyunca bu yayınımı yapabilen ve fosforesans özellik sergileyen, oldukça geniş uygulama alanına sahip malzemelerdir. Işıldamada kalıcılık, uyarım süresince tuzaklanan elektronlar veya meydana gelen boşluklar neticesinde ortaya çıkmaktadır. Nadir toprak iyonları tarafından aktive edilen inorganik fosforlarda uzun süre kalıcı fosforesans mekanizması birçok araştırmacı tarafından açıklanmaya çalışılmıştır. Son 10 yılda araştırmacılar yeni kalıcı fosforların geliştirilmesi ve sönümlenme ömürlerinin iyileştirilmesi üzerine başarılı çalışmalar gerçekleştirmişlerdir. Bu araştırmada, SrAlO4:Eu+2, Dy+3, Y+3 sistemindeki fosfora prasedmiyum oksit (Pr6O11) katkılamasının lüminesans verimine ve fosforesans özelliklere etkileri araştırılmıştır. Ayrıca, optimum özelliklere sahip şekilde geliştirilen fosforesans pigmentlerin sanatsal camlarda uygulanması üzerine çalışmalar yapılmıştır

Anahtar Kelimeler

Pr6O11, Katkılama, SrAl2O4:Eu+2, Dy+3, Y+3fosforu, Kullanım, Etki, Sanatsal camlar

Kaynakça

• El Kazazz, H., Karacaoglu, E., Karasu, B. and Agatekin, M. (2011). Production of violet-blue emitting phosphors via solid state reaction and their uses in outdoor glass fountain, Journal of American Science 7(12), 998-1004.
• Karasu, B., Yesilay, Kaya, S., Karacaoglu, E., Caki, M., Ozel, E. ve Kaya, G. (2010). The production of phosphorescent bluish- green and yellowish green pigments and their usage in III. firing (decoration firing) of wall tile glazes and vetrosa applica- tions, Final Project Report of TUBITAK 1001 Science and Technological Research Project Supporting Programme, Project No: 108M464 (in Turkish).
• Karacaoglu, E., Yesilay, Kaya, S., Karasu, B. ve Kaya, G. (2011).The synthesis of violet emitting long afterglowcalciumaluminate phosphors and properties, Abstract Book of ECerS XII, XII. Conference and Exhibition of the European Ceramic Society, Stockholm, Sweden.
• Sharma, S.K., Pitale, S.S., Malik, M.M., Dubey, R.N. ve Qureshi, M.S. (2008). Synthesis and detailed kinetic analysis using com- puterized glow-curve deconvolution tech- nique of nano crystalline Sr3Al2O6: Pr3+– A new phosphor for UV applications, Phys. Stat. Sol., (a) 205, No. 11, 2695– 2703.
• Yesilay Kaya, S. (2011). The production of inorganic-based phosphorescent pigments and their usage in conventional glaze and glass systems, Anadolu University, PhD Thesis (in Turkish).
• Yesilay Kaya, S. and Karasu, B. (2012). Glass and ceramics with phosphorescent ability, Ceramics Technical 34, 94-99.
• Yesilay Kaya, S., Karasu, B. and Karacaoglu, E. (2012). Process parameters determination of frit-based wall tiles vetrosa decorations, Ceramics Internatinal 38(4), 2757-2766.
• Unal, A., Karasu, B. and Yesilay Kaya, S. (2011). Synthesis and characterization of blue long afterglow strontium silicate phosphors and luminescence properties, Abstract Book of ECerS XII, XII. ConferenceandExhibitionoftheEuropean Ceramic Society, Stockholm, Sweden.
• Yesilay Kaya, S. and Karasu, B. (2011). The production and use of bluish-green and yellowish-green phosphorescent pigments in wall tile and vetrosa applications, Seramik Türkiye Magazine, Turkish Ceramic Federation Publication, 35, January-March, 128-134.
• Yesilay Kaya, S., Karasu, B. and Karacaoglu, E. (2010a). The effects of boron oxide content on mechanism of strontium aluminate phos
• phosphorescence 87 phors, Proceeding Books of the IMMC 2010, 15th International Metallurgy and Materials Congress, İstanbul, 2140-2146.
• Yesilay Kaya, S., Karasu, B., Kaya, G. and Karacaoglu, E. (2010b). Influences of Eu3+ and Dy3+ contents on the properties of aluminatephosphors, Advances in Science and Technology 62, 88-94. strontium
• Yesilay Kaya, S., Karasu, B., Kaya, G. and Karacaoglu, E. (2010c). Effects of firing temperature and time on the luminescency of phosphors in strontium aluminate system co-doped by Eu2O3 and Dy2O3 and prepared processing, Advances in Science and Technology 62, 82-87. state reaction
• Yesilay Kaya, S., Karasu, B. and Karacaoglu, E. (2010d). Applications of phosphorescent pigment in glasses, Proceeding of the Camgeran2010Applied Glass Symposium withInternationalParticipation,Eskişehir, 41-44 (in Turkish).
• Yesilay S., Karasu, B. and Karacaoglu, E. (2009).Theproductionandcharacterization of bluish-green and yellowish-green phosphors in the SrAl2O4: Eu2+, Dy3+ system, Abstract Book of the III. Luminescence Dosimeter Congress, Bodrum, 15 (in Turkish).
• Yen, W.M., Shinoya, S. and Yamamoto, H. (2007a). Phosphor Handbook (2nd Edition), CRC Press.
• Yen, W. M., Shionoya, S. and Yamamoto, H. (2007b). Fundamentals of Phosphors, CRC Press.
• Wei, R. P., Jua, Z. H., Ma, J. X., Zhang, D., Zang, Z. P. ve Liu, W. S. (2009). A novel white afterglow phosphorescent phosphor Ca3SnSi2O9:Dy3+, Journal of Al- loys and Compounds, 486, L17–L20.