Investigation of Ce3+-doped Na3Mo1-xWxO4F and Na2Mo1-xWxO4 as Novel Phopshor Materials. (24th July 2015)

• Record Type: Journal Article
• Authors: Gahrs, Casey J; Sullivan, Eirin
• Is Part Of: ECS transactions. Volume 66:Number 30(2015)
• Page Start: 43
• Page End: 54
• Publication Date: 2015-07-24
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06630.0043ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : A study of the effect of substituting dopant amounts of Ce 3+ for Na + into the recently characterized self-activating oxyfluoride Na3MoO4F 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 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 .