Synthesis, Luminescence Property and Thermal Quenching Investigation of Niobate Phosphors Ba3ZrNb4O15:Eu3+ under Multiple Excitations. (1st January 2018)

• Record Type: Journal Article
• Authors: Xin, Shuangyu; Zhou, Faguang; Zhao, Lei; Liu, Bitao; Wang, Chuang; Wang, Xuejiao; Li, Zhuowei; Zhu, Ge
• Is Part Of: ECS journal of solid state science and technology. Volume 7:Number 6(2018)
• Page Start: R94
• Page End: R98
• Publication Date: 2018-01-01
• Subjects: Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2.0271806jss
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : A series of new niobate phosphors Ba3 ZrNb4 O15 : x Eu 3+ (0 ≤ x ≤ 0.04) were firstly prepared, and their phase purity as well as the site occupation situation of Eu 3+ ions was carefully investigated via X-ray diffraction structure refinement and series powder X-ray diffraction patterns. The morphology and microstructure were studied through scanning electron microscope and high-resolution transmission electron microscopy. Versatile luminescent properties were studied through analyzing the excitation spectra monitored at 613 nm and the emission spectra under 396 and 468 nm excitations. The contents dependent luminescent properties of Ba3 ZrNb4 O15 : x Eu 3+ (0 ≤ x ≤ 0.04) under different excitation wavelengths were investigated. The optimal doping content, CIE chromaticity coordinates, color purity as well as the quantum efficiency were determined. The thermal quenching analysis showed that Ba3 ZrNb4 O15 :Eu 3+ had excellent thermal stability at 468 nm excitation and exhibited linear changed thermal quenching behavior at 396 nm excitation. The mechanism of thermal quenching behavior under different excitation wavelengths was discussed through the configurational coordinate diagram. The temperature dependent luminescence decay behavior was studied upon different excitation wavelength and the corresponding activation energy was calculated by a modified Arrhenius equation.