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采用高温固相法制备了Sr2SiO4.SrCl2∶Eu2+荧光粉,并研究了材料的发光特性。X射线衍射结果显示,Sr2SiO4.SrCl2∶Eu2+材料是由SrCl2∶Eu2+和Sr2SiO4∶Eu2+构成的复合化合物。以320nm紫外光作为激发源,测得材料的发射光谱呈宽谱特征,覆盖350～600nm。在0.5%～2%范围增大Eu2+掺杂量时,位于蓝色光区域的发射峰位置没有变化,为403nm,处于长波方向的发射峰呈现出先红移、后蓝移的变化趋势,但两发射峰的强度均明显减小。监测两发射峰,所得结果分别对应SrCl2∶Eu2+和Sr2SiO4∶Eu2+材料的激发光谱,覆盖250～400nm。分析认为,材料的光谱分布及发射强度的变化与晶场环境及处于不同Sr2+格位上Eu2+间的能量传递等有关。
Sr2SiO4.SrCl2:Eu2 + phosphors were prepared by high temperature solid-state reaction and their luminescent properties were studied. X-ray diffraction results show that Sr2SiO4.SrCl2:Eu2 + is a complex compound composed of SrCl2: Eu2 + and Sr2SiO4: Eu2 +. With 320nm UV light as the excitation source, the emission spectrum of the material was found to be broad-spectrum, covering 350 ~ 600nm. In the range of 0.5% ~ 2%, the emission peak located in the blue region did not change to 403 nm, while the emission peak in the long wave direction showed the trend of red-shift and blue-shift after the Eu2 + doping. However, The peak intensity are significantly reduced. The two emission peaks were monitored and the results corresponded to the excitation spectra of SrCl2: Eu2 + and Sr2SiO4: Eu2 +, respectively, covering 250-400 nm. The analysis shows that the change of the spectral distribution and the emission intensity of the material is related to the crystal field environment and the energy transfer between Eu2 + and Sr2 + at different positions.