Influences of Eu2+ and Dy3+ Contents on the Properties of Long Afterglow Strontium Aluminate Phosphors

Karacaoğlu, Erkul; Yeşilay, SELVİN; Karasu, Bekir; Kaya, Güray

doi:10.4028/www.scientific.net/ast.62.88

Influences of Eu2+ and Dy3+ Contents on the Properties of Long Afterglow Strontium Aluminate Phosphors

Atıf İçin Kopyala

Karacaoğlu E., Yeşilay S., Karasu B., Kaya G.

Advances in Science and Technology Research Journal (ASTRJ), cilt.62, ss.88-94, 2010 (ESCI)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 62
Basım Tarihi: 2010
Doi Numarası: 10.4028/www.scientific.net/ast.62.88
Dergi Adı: Advances in Science and Technology Research Journal (ASTRJ)
Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI)
Sayfa Sayıları: ss.88-94
Anadolu Üniversitesi Adresli: Evet

Özet

The detailed preparation process of Eu2+ and Dy3+ ion co-doped phosphor powders in Sr4Al14O25:Eu2+/Dy3+ phosphor system with bluish-green long afterglow produced by solid state reaction method under reducing atmosphere is here reported. X-ray diffraction (XRD), scanning electron microscopy (SEM), and particle size analysis were made to assign the effects of Eu and Dy ions on the luminescent properties of the synthesized phosphors, which were determined by measuring the photoluminescence spectra. The maximum emission intensity of these phosphors under excitation was investigated. As a result, the relevant values were obtained from the phosphorescent pigment with 0.21% and 0.05% molar percent of Eu2+ and Dy3+.