On the sol–gel fabrication and characterization of undoped and cerium-doped Sr4Al14O25

• Published in: Journal of alloys and compounds Vol. 614; pp. 44 - 48
• Main Authors: Misevicius, Martynas, Kilmanas, Martynas, Culunlu, Serdar, Sakirzanovas, Simas, Morkan, Ayse Uztetik, Beganskiene, Aldona, Kareiva, Aivaras
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 25.11.2014; Elsevier
• Subjects: Cerium doping; Cold working, work hardening; annealing, quenching, tempering, recovery, and recrystallization; textures; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Luminescence; Materials science; Materials synthesis; materials processing; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Photoluminescence; Physics; Sol–gel synthesis; Sr4Al14O25; Strontium aluminate; Treatment of materials and its effects on microstructure and properties; Strontium aluminate; Sol–gel synthesis; Sr4Al14O25; Cerium doping; Luminescence; Annealing; Doping; Photoluminescence; Al; Sol-gel synthesis; O; Impurities; Reaction mechanism; Cerium additions; Excitation spectrum; Sol-gel process; Sr
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2014.06.037

•Sr4Al14O25 samples were prepared using aqueous sol–gel synthesis.•The boric acid as fluxing agent for the synthesis should be used.•Doping with cerium could be successfully performed.•Photoluminescence properties of doped samples were studied. An aqueous sol–gel synthesis route has been used for the preparation of undoped and cerium-doped strontium aluminate phase Sr4Al14O25. This study revealed required conditions for obtaining single phase compound, which are 1300°C annealing temperature and addition of 2.5% of boric acid as a fluxing agent. The fact that boric acid is involved in the process of formation of strontium aluminate was confirmed by thermogravimetric measurements. A series of cerium-doped samples has been prepared and their excitation and emission spectra has been measured, which showed peaks at 330nm and 385nm, respectively.