P掺杂对绿色荧光粉BaMgAl$lt;sub$gt;10$lt;/sub$gt;O$lt;sub$gt;17$lt;/sub$gt;:Mn$lt;sup$gt;2+$lt;/sup$gt;性能的影响

采用高温固相法合成P掺杂的BaMgAl₁₀O₁₇:Mn²⁺荧光粉，其中P通过（NH₄）₂HPO₄引入.利用X射线衍射谱、傅里叶变换红外光谱、扫描电子显微镜、能量色散谱、真空紫外光谱等研究了P掺杂对BaMgAl₁₀O₁₇:Mn²⁺晶体结构、微观形貌、发光性能等的影响.研究结果表明：（NH₄）₂HPO₄具有助熔剂的作用，它的加入有助于荧光粉的晶化，改善荧光粉的形貌.P掺杂进入晶格，使得晶胞参数变小，从而改变了Mn²⁺的晶体场环境，引起发射光谱蓝移，色坐标x值降低.P掺杂能有效提高基质对真空紫外线的吸收，从而提高真空紫外激发下的发光强度. 关键词： P掺杂 10O₁₇:Mn²⁺')" href="#">BaMgAl₁₀O₁₇:Mn²⁺ 晶体结构 真空紫外

Effect of phosphor-doping on optical properties of BaMgAl10O17:Mn2+

The diammonium phosphate was added as start material to synthesize P doped BaMgAl₁₀O₁₇:Mn²⁺ phosphors, which were prepared by high temperature solid state technology. The effect of P doping on the structure, morphology and luminescent properties of BaMgAl₁₀O₁₇:Mn²⁺ were determined by X ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, energy dispersive X ray spectroscopy and vacuum ultraviolet （VUV） spectra. The results show that P doping is conducive to the crystallization of the phosphors and improving the morphology. The lattice parameters become smaller when the phosphor is doped with P. The P doping makes the emission spectra to blue shift and the CIE x value to decrease. At appropriate P concentration, the absorption of the matrix in VUV range is improved, and the emission intensity under VUV excitation is enhanced.