研究目的
To study the luminescence characteristics of Sm3+-doped Sr3B2O6 phosphor, including its synthesis, characterization, and photoluminescence properties, and to discuss the relation between the charge transfer band of Sm3+ ion and the host composition.
研究成果
The Sm3+-doped Sr3B2O6 phosphors exhibit reddish orange luminescence with four sharp emission peaks. The charge transfer band shifts depending on the host composition's covalency and ionic radius, making it a promising material for optical applications.
研究不足
The study is limited to specific doping concentrations (x = 0, 0.04, 0.06) and synthesis conditions; potential impurities or secondary phases were not observed but could affect results; application in devices was not tested.
1：Experimental Design and Method Selection:
The phosphor was synthesized using a solution combustion synthesis method followed by heating at 1000°C in air. Characterization was done using powder XRD and photoluminescence spectroscopy.
2：Sample Selection and Data Sources:
Samples with Sm3+ doping concentrations x = 0,
3：04, and 06 in Sr3-xSmxB2O6 were prepared. List of Experimental Equipment and Materials:
Starting materials included Sr(NO3)2 (Sigma-Aldrich ≥99%), H3BO3 (Merck ≥
4：8%), Sm(NO3)3 (Alfa Aesar ≥99%), and CO(NH2)2 (Fluka ≥5%). Equipment included a muffle furnace, X-ray Rigaku Ultima IV instrument, and Thermo Scientific Lumina fluorescence spectrometer. Experimental Procedures and Operational Workflow:
Stoichiometric amounts of materials were mixed in distilled water, heated at 500°C for 15 min, milled, and then heated at 1000°C for 12 h. XRD was performed with CuKα radiation, and photoluminescence spectra were measured at room temperature.
5：Data Analysis Methods:
XRD patterns were compared with JCPDS Card No. 31-1343; photoluminescence spectra were analyzed for emission peaks and charge transfer bands.
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