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本文研究了B2O3的摩尔含量和合成温度两个因素对名义组成为2SrO.3Al2O3:Eu2+,Dy3+长余辉发光材料性能的影响,实验表明,当B2O3加入量较少且合成温度适当时,可以观察到一个新物相的X射线衍射峰,此时Eu2+的发射峰在460nm附近;当B2O3加入量较多或合成温度较高时,合成样品的主要物相是Sr4Al14O25:Eu2+,Dy3+,此时Eu2+的发射主峰在490nm附近。当合成温度为1250℃,B2O3加入量为15%摩尔分数时,样品的发光亮度较高,仪器可测的余辉时间达16h以上,肉眼可见的余辉时间达到24h,具有一定的实用价值。
In this paper, the influence of the molar content of B2O3 and the synthesis temperature on the properties of the long-lasting luminescent materials with the nominal composition of 2SrO.3Al2O3: Eu2 +, Dy3 + has been studied. The experimental results show that when the amount of B2O3 is small and the synthesis temperature is suitable, A new phase of the X-ray diffraction peak, the Eu2 + emission peak at around 460nm; when the amount of B2O3 or synthesis temperature is higher, the main phase of the synthesized sample is Sr4Al14O25: Eu2 +, Dy3 +, when Eu2 + The main emission peak around 490nm. When the synthesis temperature is 1250 ℃ and the content of B2O3 is 15%, the luminescence intensity of the sample is high, the afterglow time of the instrument is above 16h, and the afterglow time can be seen by the naked eye reaches to 24h, which has certain practical value.