Synthesis and luminescence properties of a novel red SrMoO4:Sm3+,R+ phosphor

• Published in: Solid state sciences 2011-03, Vol.13 (3), p.579-583
• Main Authors: Lin, Xiang, Qiao, Xvsheng, Fan, Xianping
• Format: Article
• Language: English
• Subjects: Applied sciences; Charge; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Electronics; Emission; Emission spectra; Exact sciences and technology; Light-emitting diodes; Luminescence; Materials science; Materials synthesis; materials processing; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optoelectronic devices; Phosphors; Photoluminescence; Physics; Quenching; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Solid state; Synthesis
• ISSN: 1293-2558; 1873-3085
• DOI: 10.1016/j.solidstatesciences.2010.12.029

A novel red SrMoO4:Sm3+,R+ (R+aa=aaLi+, Na+, K+) phosphor was prepared by solid state reaction method. XRD results showed that 950aaA degree C was a suitable sintered temperature for preparation of SrMoO4:Sm3+ phosphors. The emission spectra of the SrMoO4:Sm3+ phosphors consisted of some sharp emission peaks of Sm3+ ions centred at 562aanm, 601aanm, 646aanm, 703aanm, generating bright orange-red light. Luminescence concentration quenching could be observed when the doping concentration of Sm3+ ions was more than 2aamol%. The introduction of charge compensator R+ (R+aa=aaLi+, Na+, K+) into the host efficiently enhanced the luminescence intensity of the SrMoO4:Sm3+ phosphors. The CIE chromaticity coordinates of the Sr0.96MoO4:0.02Sm3+,0.02Na+ phosphors was quite close to that of commercial red Sr2Si5N8:Eu2+ phosphors. These SrMoO4:Sm3+,R+ (R+aa=aaLi+, Na+, K+) phosphors may be potentially used as red phosphors for white light-emitting diodes. Display Omitted