Hakeem A, Shinde K N, Yoon S J, Dhoble S J, Park K
J Nanosci Nanotechnol. 2014 Aug;14(8):5873-6. doi: 10.1166/jnn.2014.8302.
We studied the microstructure and photoluminescence properties of Ca(1-x)MgP2O7:xEu(3+) (0.01 ≤ x ≤ 0.2) phosphors, considering Eu(3+) content. The Ca(1-x)MgP2O7:xEu(3+) phosphors crystallized in the monoclinic structure, belonging to the space group of P2(1)/n. The Ca(1-x)MgP2O7:xEu(3+) phosphors showed a nanocrystalline nature. In the FT-IR and Raman spectra, the stretching vibrations of PO3 and P-O-P groups in (P2O7)(4-) were observed. The amount of Eu(3+) content significantly affected the magnitude of the excitation and emission intensities. The excitation intensity at 393 nm and the emission intensity at 605-628 nm were increased with an increase in Eu(3+) content up to x = 0.1 and then decreased with further increasing Eu(3+) content. The strong emission intensity under near ultraviolet excitation makes it possible red phosphor for generating white light based on LEDs.
考虑到Eu(3+)含量，我们研究了Ca(1-x)MgP2O7:xEu(3+)（0.01≤x≤0.2）荧光粉的微观结构和光致发光特性。Ca(1-x)MgP2O7:xEu(3+)荧光粉结晶为单斜结构，属于P2(1)/n空间群。Ca(1-x)MgP2O7:xEu(3+)荧光粉呈现出纳米晶性质。在傅里叶变换红外光谱（FT-IR）和拉曼光谱中，观察到了(P2O7)(4-)中PO3和P-O-P基团的伸缩振动。Eu(3+)含量显著影响激发强度和发射强度的大小。在393nm处的激发强度以及在605 - 628nm处的发射强度随着Eu(3+)含量增加至x = 0.1而增大，然后随着Eu(3+)含量进一步增加而减小。近紫外激发下的强发射强度使得它有可能成为用于基于发光二极管（LED）产生白光的红色荧光粉。
