Effect of W6+ dopant on the morphology and luminescence properties of NaLa(MoO4)2: Eu3+ phosphors. (May 2018)

• Record Type: Journal Article
• Authors: Shi, Yurong; Liu, Bitao; Li, Chunyang; Luo, Wen; Wang, Zhenling
• Is Part Of: Materials research bulletin. Volume 101(2018)
• Page Start: 319
• Page End: 323
• Publication Date: 2018-05
• Subjects: D. Luminescence -- A. Optical materials -- D. Optical properties; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2018.01.048
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: NaLa(Wx Mo1−x O4 )2 : Eu 3+ with various shapes were synthesized via hydrothermal method. No structural modifier or organic solvents were used. Morphology and luminescence properties were manipulated by mole ratio of W/Mo. NaLa(Wx Mo1−x O4 )2 :Eu 3+ was brighter than that of Com-Y2 O3 : Eu 3+ . Abstract: W 6+ dopant on the NaLa(MoO4 )2 :Eu 3+ solid solution phosphors with various shapes have been synthesized via the hydrothermal method without using any structural modifier and organic solvents. The morphology and luminescence properties of W 6+ doped NaLa(MoO4 )2 :Eu 3+ phosphors are obtained and characterized by SEM and PL/PLE spectra. Both morphology and luminescence properties are considered to manipulate by the mole ratio of W/Mo. By increasing the W 6+ amount, particle shapes are changed from rice-shaped particles to spindle-shaped, cocoon-shaped, then to layers of octahedron-shaped. Under UV light excitation, all samples show bright red light due to the characteristic 4f-4f transitions of Eu 3+ . Tungstate and molybdate phosphors have higher luminescence intensity than that of tungstate and molybdate solid solution phosphors.