CAJ | 학술논문

采用传统的熔融淬冷法在空气气氛下成功制备了Ce3＋-Tb3＋共掺的含有新型立方相NaLuF4纳米晶的微晶玻璃．通过XRD分析可知微晶玻璃中析出的是与立方相NaYF4同构的新型立方相NaLuF4纳米晶．利用TEM观察到纳米晶粒均匀地分布在玻璃基质中，大小约为20 nm．利用荧光光谱及寿命曲线系统地研究了样品的荧光特性．在315 nm近紫外光激发下，通过有效的能量传递，在Ce3＋-Tb3＋共掺样品中不仅得到了Ce3＋的近紫外光发射，还得到了Tb3＋的黄绿光发射．另外，析晶之后，共掺样品的发光强度得到了增强，这可以归因于部分稀土离子进入到了析出的立方相NaLuF4纳米晶中．研究结果表明，该微晶玻璃是一种优异的发光基质材料，在光电子领域中具有潜在的应用价值．
채용전통적용융쉬랭법재공기기분하성공제비료Ce3＋-Tb3＋공참적함유신형립방상NaLuF4납미정적미정파리．통과XRD분석가지미정파리중석출적시여립방상NaYF4동구적신형립방상NaLuF4납미정．이용TEM관찰도납미정립균균지분포재파리기질중，대소약위20 nm．이용형광광보급수명곡선계통지연구료양품적형광특성．재315 nm근자외광격발하，통과유효적능량전체，재Ce3＋-Tb3＋공참양품중불부득도료Ce3＋적근자외광발사，환득도료Tb3＋적황록광발사．령외，석정지후，공참양품적발광강도득도료증강，저가이귀인우부분희토리자진입도료석출적립방상NaLuF4납미정중．연구결과표명，해미정파리시일충우이적발광기질재료，재광전자영역중구유잠재적응용개치．
Ce3+-Tb3+co-doped highly transparent glass-ceramics containing novel cubic NaLuF4 nanocrystals was successfully obtained.By XRD measurement and detailed calculation, the precipitated nanocrystal was cubic NaLuF4 , which was isomorphic to cubic NaYF4 .TEM micrograph clearly demonstrated the homogene-ously distribution of spherical nanocrystals with a narrow size distribution around 20 nm in diameter among the residual glass phase.The Ce3+-Tb3+co-doped samples could give the ultra-violet emission of Ce3+and the green emission of Tb3+upon 315 nm excitation due to an efficient energy transfer process.Interestingly, the luminescent intensity in glass-ceramics was enhanced compared to that in precursor glass, which was owing to the partial incorporation of rare-earth ions into the NaLuF4 nanocrystals after thermal-treatment.The results showed that such glass-ceramics were excellent luminescent materials and would have potential applications in photonics.