以ＳｒＡｌ２Ｏ４：Ｅｕ，Ｄｙ长余辉发光粉体和低熔点硼硅酸盐玻璃为原料，在一定条件下合成了长余辉蓄光玻璃．研究结果表明，烧成温度和保温时间对该玻璃的发光效果影响较大．温度越高，保温时间越长，由于空气的氧化作用，蓄光玻璃的发光效果越差，本试验控制烧成温度在７５０～８００℃间，保温时间在 １０ｍｉｎ以内，能合成性能较好的蓄光玻璃．余辉衰减曲线表明蓄光玻璃的发光性能较之原始发光粉体有所下降．ＳＥＭ分析表明，低温合成的蓄光玻璃中，所含能继续保持发光性质的粉体料，明显比高温合成样要多．
SrAl2O4:Eu,Dy long afterglow luminescence powders and low melting point B-Si glass were employed as the sources, and synthesized the long afterglow
luminescence glass at suitable conditions. The results of experiments indicate that sintering temperature and soaking time have great influence on the properties of
the glass, and the luminescence effect will decrease as sintering temperature and soaking time increase. In this experiment, sintering temperatures were chosen at 750～800℃ and soaking time was maintained about 10min. Under those
conditions, a serious of luminescence glass with good properties was prepared. The decay curves indicate that the luminescent properties of the luminescence glass
decrease compared with its original phosphor powders. The analytical results of SEM indicate that the glass prepared at low temperature containes more luminescent
powders for long afterglow than that of prepared at relatively high temperature.
参考文献
| [1] | Hoogenstraten W. Philips. Res. Repts., 1958, 13: 515--521. [2] Abbruscato V. J. Electrochem. Soc., 1971, 118 (6): 930--932. [3] Murayam Y. セテミツクス, 1997, 32 (1): 40--43. [4] 唐明道, 李长宽, 高志武. 发光学报, 1995, 16 (1): 51--56. [5] Jia W Y, Yuan H B, Yen W M. J. Luminescence, 1998, (76): 424--427. |
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