A Novel Red-Emitting Phosphor Ca2GdNbO6: Eu3+: Influences of Sintering Temperature and Eu3+ Concentration on the Photoluminescence. (10th February 2021)

• Record Type: Journal Article
• Authors: Zhang, Xin; Cui, Ruirui; Zhang, Jun; Qi, Xiaosi; Deng, Chaoyong
• Is Part Of: ECS journal of solid state science and technology. Volume 10:Number 2(2021)
• Publication Date: 2021-02-10
• Subjects: Photoluminescence -- Double perovskite -- Red phosphors -- Europium -- Sintering temperature; Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2162-8777/abe1d7
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : A series of novel double perovskite Ca2 GdNbO6 : Eu 3+ red-emitting phosphors have been synthesized by the conventional solid-state reaction route at various Eu 3+ ion concentrations and sintering temperature. The crystal structure of phosphors was determined by an X-ray powder diffraction pattern, and the micromorphology was described by scanning electron microscope. The optical properties were analyzed through absorption spectra, photoluminescence spectra, decay curve, CIE chromaticity coordinate, and thermal stability. The synthesized Ca2 GdNbO6 : Eu 3+ phosphors emit red light (614 nm) under 416 nm excitation. The emission intensity of the sample reaches the maximum when the Eu 3+ ion concentration is of 0.5. The CIE chromaticity coordinate of Ca2 GdNbO6 : 0.5Eu 3+ phosphor is (0.652, 0.347), located in the red region. The investigation results indicated that the Ca2 GdNbO6 : Eu 3+ phosphors have potential application in white light-emitting diodes.