Molten salt synthesis and luminescent properties of nearly spherical YAG:Ce phosphor. (February 2015)

• Record Type: Journal Article
• Authors: Liang, Yujun; Yu, Dongyan; Huang, WenZhu; Zhang, Mengfei; Li, Guogang; Yan, Chunjie
• Is Part Of: Materials science in semiconductor processing. Volume 30(2015:Feb.)
• Page Start: 92
• Page End: 97
• Publication Date: 2015-02
• Subjects: YAG:Ce -- Phosphor -- Molten salt -- Morphology; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2014.09.037
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: Nonaggregated YAG:Ce phosphor with a nearly spherical morphology was successfully synthesized using the mixtures of Na2 SO4 –BaF2 as the molten salt and the oxides (Y2 O3, CeO2 and Al2 O3 ) as raw materials via a molten salt method. The Y3 Al5 O12 phase can be well crystallized at a temperature as low as 1350 °C. By varying the mass ratios of molten salt/raw materials and Na2 SO4 /BaF2, the average diameter of the particles can be controlled in a range of 10–40 μm. The as-prepared YAG:Ce phosphor showed a characteristic yellow emission of Ce ions in a range of 480–650 nm under excitation of 460 nm blue light. What׳s more, the phosphor showed the strongest emission when the mass ratio of the molten salt/raw materials was 1.8:1 and the dosage of BaF2 in Na2 SO4 –BaF2 was 5 wt%.