Preparation and photoluminescence properties of red-emitting phosphor ZnAl2O4:Eu3+ with an intense 5D0 → 7F2 transition. (1st February 2018)

• Record Type: Journal Article
• Authors: He, Can; Ji, Haipeng; Huang, Zhaohui; Zhang, Xiaoguang; Liu, Haitao; Liu, Silin; Liu, Yangai; Fang, Minghao; Wu, Xiaowen; Min, Xin
• Is Part Of: Materials research express. Volume 5:Number 2(2018)
• Publication Date: 2018-02-01
• Subjects: aluminates -- europium -- photoluminescence -- phosphors; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aaa7c9
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: A series of ZnAl2− x O4 : x Eu 3+ phosphors was synthesized by a modified co-precipitation method. The phase structure and photoluminescence properties were examined and extensively discussed. Composition-optimized ZnAl1.97 O4 :0.03Eu 3+ exhibited sharp, intense red characteristic emissions with the Commission Internationale de l'Eclairage coordinates of (0.62, 0.33) peaking at 620 nm under an excitation at 394 nm, corresponding to the 5 D0 → 7 F2 transition of Eu 3+ . The quenching concentration of Eu 3+ in ZnAl2− x O4 : x Eu 3+ phosphors was approximately 0.03. In addition, the concentration quenching mechanism, fluorescence decay curves, and thermally stable luminescence properties of ZnAl2– x O4 : x Eu 3+ phosphors were investigated. The results indicated that ZnAl2– x O4 : x Eu 3+ phosphors demonstrate potential applications in near-ultraviolet light-emitting diode pumped white light lamps.