Synthesis and luminescent properties of Eu3+-doped ZnO phosphors

• Published in: Journal of the Korean Physical Society Vol. 66; no. 10; pp. 1559 - 1563
• Main Author: Cho, Shinho
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Physical Society 01.05.2015; 한국물리학회
• Subjects: Mathematical and Computational Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Theoretical; 물리학; ZnO:Eu; Synthesis; Photoluminescence
• ISSN: 0374-4884; 1976-8524
• DOI: 10.3938/jkps.66.1559

Eu 3+ -doped ZnO phosphors were prepared with different concentrations of Eu 3+ ions by using a solid-state reaction method. The synthesized samples were systematically characterized by using X-ray diffraction (XRD), scanning electron microscopy, and photoluminescence spectroscopy. The XRD patterns indicate that the intensity of the ZnO (101) peak gradually increases with increasing concentration of Eu 3+ ions, with an additional Eu 2 O 3 (222) diffraction peak appearing in samples with Eu 3+ concentrations above 2 wt%. All of the phosphor samples, irrespective of the concentration of Eu 3+ ion, show a dominant red emission centered at 612 nm, which originates from the 5 D0 → 7 F 2 electric dipole transition of the Eu 3+ ion. This suggests that the Eu 3+ ions are mainly situated in the asymmetry centers of the host lattice.