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张清君,刘晃清,王玲玲.La2O3:Sm3+纳米发光材料的燃烧法合成及其性能研究[J].稀有金属材料与工程(英文),2019,48(1):133~136.[Zhang Qingjun,Liu Huangqing and Wang Lingling.Study on Synthesis and properties of nano luminescent materials La2O3:Sm3+ by combustion method[J].Rare Metal Materials and Engineering,2019,48(1):133~136.]
Study on Synthesis and properties of nano luminescent materials La2O3:Sm3+ by combustion method
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Received:May 10, 2017  Revised:June 05, 2017
DOI:
Key words: La2O3  Sm3+  Luminescence  Nanomaterials  Combustion synthesis
Foundation item:国家自然科学基金资助(61505052, 61176116)
Author NameAffiliation
Zhang Qingjun,Liu Huangqing and Wang Lingling  
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Abstract:
      Nanomaterials La2O3:Sm3+was prepared by combustion synthesis. The morphology and structure were characterized and analyzed by TEM and XRD. The luminescent properties were also investigated. The results were indicated that the mean particle size of La2O3:Sm3+ nanomaterials with hexagonal structure were approximately 34 nm. Because of the Sm3+ doping, the position of diffraction peaks of La2O3:Sm3+ moved to the right slightly; It was observed that intrinsic excitation band of Sm3+ was located in around 411 nm; Under the 411 nm excitation, the major emission peaks at 4G5/2 → 6H5/2 (568 nm),4G5/2 → 6H7/2 (611 nm, the highest intensity) and 4G5/2 → 6H9/2 (654 nm) were observed. The emission spectrum indicated the location of the Sm3+ ions were asymmetric. The decay lifetime of the Sm3+ ions was about 202 μs; The chromaticity coordinate was approximately (0.5849, 0.4143).