采用水热法合成了Er3+掺杂的1 550 nm氟化物上转换发光超细粉。与传统高温固相法样品相比,水热法合成的样品颗粒细小,与光电探测及成像器件耦合匹配应用时,更有利于提高器件的空间分辨率。探讨了Er3+掺杂四元氟化物1 550 nm上转换发光的物理机制,研究了Er3+掺杂浓度、反应温度及反应时间对产物上转换发光性能的影响。
Fluoride upconversion luminescent ultrafine powder was synthesized successfully by the hydrothermal method.Comparing with the high-temperature solid-state reaction method,the sample from the hydrothermal method is more suitable for the application in optoelectronic detection because of the better spatial resolution.The physical mechanism of the Er3+-doped fluoride 1 550 nm upconversion luminescence was discussed.The influences of Er3+ dopant concentration,reaction temperature and reaction time were studied.