X-ray Induced Luminescence Spectroscopy of Samarium Doped Barium Sulfate Prepared by Sintering Method

6th International Conference on Optical, Optoelectronic and Photonic Materials and Applications 2014

Kumeda, T.^1 ; Maeda, K.^1 ; Shirano, Y.^1 ; Fujiwara, K.^1 ; Sakai, K.^2 ; Ikari, T.^1

Faculty of Engineering, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki City

889-2192, Japan^1

Cooperative Research Center, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki City

889-2192, Japan^2

关键词: Concentration dependence;    Concentration quenching;    Host materials;    Luminescence spectroscopy;    Phosphor materials;    PL intensity;    Sintering methods;    X-ray energies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/619/1/012038/pdf
DOI  :  10.1088/1742-6596/619/1/012038

来源: IOP

【 摘 要 】

X-ray induced luminescence (XL) properties of phosphor materials made of samarium doped barium sulfate have been investigated. The samples were prepared by sintering method heated at 900-1250 °C for 3 hours in air from the mixture of BaSO4and Sm2O3. The concentration of Sm were prepared from 0.01-6 at.%. In as-prepared sample, the Sm3+was detected by photoluminescence (PL). The PL intensity is maximum about 2 at.% with Sm, and then starts decreasing. The PL intensity showed concentration quenching. The XL observed Sm2+and Sm3+ions. The XL was shown from the sample sintered up to 1200 °C. The XL intensity increased with Sm concentration up to 1 at.%. The intensity was almost constant larger than 1 at.% Sm. These concentration dependences is different since the X-ray energy absorbed to the host material at once, and the energy transferred to both Sm3+and Sm2+ions. Sm doped BaSO4is found a host for XL phosphor materials.