Investigation of Na2Mo1-xWxO4 and Ce3+-Doped Na3Mo1-xWxO4F as Phosphor Materials. (21st December 2016)

• Record Type: Journal Article
• Authors: Gahrs, C. J.; Markello, M. L.; Sullivan, Eirin
• Is Part Of: ECS journal of solid state science and technology. Volume 6:Number 1(2017)
• Page Start: R20
• Page End: R23
• Publication Date: 2016-12-21
• Subjects: Anti-perovskites -- Oxy-fluorides -- Photoluminescence -- Powder X-ray diffraction; Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2.0151701jss
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : A study of the effect of substituting dopant amounts of Ce 3+ for Na + into the self-activating oxyfluoride Na3 MoO4 F according to Na3–3 a Ce a MoO4 F (0 ≤ a ≤ 0.25) showed the optimum intensity of photoluminescent output is achieved for a = 0.05 yielding maximum excitation λex = 216 nm and emission λem = 450 nm. It was also shown that the known oxide phases Na2 WO4 and Na2 MoO4 with spinel structure readily form an isostructural solid solution with general formula Na2 Mo1- x W x O4 (0 ≤ x ≤ 1). Similar to the oxyfluorides, these oxide materials also display self-activating photoluminescence with excitation λex = 200 nm and emission λem = 446.5 nm and optimum intensity of photoluminescence observed for the tungstate Na2 WO4 .