CAJ | 학술논문

采用高温固相反应合成了M5-2xSmxNax(PO4)3F(M=Ca,Sr,Ba)荧光体,研究了其在真空紫外.可见光范围的发光特性.发现在Ca5(PO4)3F中Sm3+的电荷迁移带约在191 nm,在Sr5PO4)3F中约在199 nm,而在Ba5(PO4)3F中约在204 nm,随着被取代碱土离子半径的增大电荷迁移能量逐渐减小.比较了M5PO4)3F(M=Ca,Sr,Ba)中Sm3+和Eu3+电荷迁移能量的关系.
채용고온고상반응합성료M5-2xSmxNax(PO4)3F(M=Ca,Sr,Ba)형광체,연구료기재진공자외.가견광범위적발광특성.발현재Ca5(PO4)3F중Sm3+적전하천이대약재191 nm,재Sr5PO4)3F중약재199 nm,이재Ba5(PO4)3F중약재204 nm,수착피취대감토리자반경적증대전하천이능량축점감소.비교료M5PO4)3F(M=Ca,Sr,Ba)중Sm3+화Eu3+전하천이능량적관계.
The phosphors with general molecular formula M5-2xSmxNax (PO4) 3F (M=Ca, Sr, Ba) were prepared by a high-temperature solid state reaction technique. The spectroscopic properties in VUV-Vis (vacuum ultraviolet-Visible) range were investigated. The maxima of CTBs (charge transfer hands) were found to be at about 191 nm for M=Ca, 199 nm for M=Sr, and 204 nm for M=Ba, showing the CT energy decreasing with the increase of the site size. The CT energy difference of Sm3+ and Eu3+ in a specific host lattice M5 (PO4) 3F (M=Ca, Sr, Ba) was compared. The relationships on the substituted ionic radii and the CT energy of Sm3+ and Eu3+ in Ms (PO4) 3F (M=Ca, Sr, Ba) are proposed.