银纳米晶对铒镱共掺的TeO2-WO3-La2O3微晶玻璃发光性能的影响

摘要

The transparent TeO2-WO3-La2O3-Er2O3-Yb2O3 glass-ceramics containing silver nanocrystals and micro-crystals such as Er2WO6,La2WO6 were prepared by the conventional melt-quenching method,which exhibit excellent up-conversion luminescence properties.The results show that the precipitation of silver nanocrystals and micro-crystals was related to the introducing way of silver nanocrystals and heat treatment temperature.After heat treated at 390 ℃C for 15 min,the luminescent intensity of the glass co-doped with AgCl and AgNO3 is higher than the glass which is single doped with AgCl or AgNO3.The introduction of silver nanocrystals and microcrystals can synergistically increase the UC luminescence of the tellurite glass.%通过熔融退火的方法以及热处理技术制备得到含有Er2WO6,La2WO6晶体的TeO2-WO3-La2O3-Er2O3-Yb2O3微晶玻璃,该玻璃具有优异的上转换发光性能.结果表明,在含银纳米品的碲酸盐微晶玻璃中,银纳米晶和微晶的析出情况与银纳米晶的引入方式和热处理温度有关.经过390℃下15 min的热处理后,AgCl和AgNO3共掺的碲酸盐微晶玻璃比单掺AgCl或AgNO3的碲酸盐微品玻璃具有更高的发光强度.银纳米晶与微晶的引入可协同提高碲酸盐玻璃的上转换发光性.