Crystal structure and photoluminescent property of Eu3+-doped K3GdSi2O7. Issue 3 (1st September 2017)

• Record Type: Journal Article
• Authors: Nunotani, Naoyoshi; Asakawa, Yoshiki; Watanabe, Mizuki; Imanaka, Nobuhito
• Is Part Of: Journal of Asian ceramic societies. Volume 5:Issue 3(2017)
• Page Start: 377
• Page End: 380
• Publication Date: 2017-09-01
• Subjects: Red emitting phosphor -- K3GdSi2O7 -- Solid-state reaction; Ceramics -- East Asia -- Periodicals; Materials science -- Periodicals; 620.1405
• DOI: 10.1016/j.jascer.2017.07.002
• Languages: English
• ISSNs: 2187-0764

Abstract

Abstract: Red emitting phosphors of K3 (Gd1− x Eu x )Si2 O7 were synthesized by the conventional solid-state reaction method, and the crystal structure and the photoluminescent property were investigated. In this structure, Gd 3+ ions occupy two sites in the GdO6 triangular prism and the GdO6 octahedron, and Eu 3+ ions are predominantly introduced into the triangular prismatic Gd 3+ sites from the results of the Rietveld analysis and the photoluminescence spectroscopy. Among the K3 (Gd1− x Eu x )Si2 O7 samples, the K3 (Gd0.1 Eu0.9 )Si2 O7 ( x = 0.9) phosphor exhibited the highest emission intensity of 116% in comparison with the commercial (Y0.98 Eu0.02 )2 O2 S phosphor, caused by the effectively suppression of the concentration quenching in the structure.