CAJ | 학술논문

采用溶胶-凝胶法,以葡萄糖为表面活性剂,成功地合成了三维花状的Sr2MgSi2O7∶Eu2＋蓝色荧光粉。利用X射线衍射仪、扫描电镜、荧光光谱仪对产物的结构、形貌和发光性能进行了分析。结果表明,添加适量的葡萄糖对产物的结构无影响,但可改变产物的形貌和提高发光性能。当葡萄糖含量为0.03g/mL时,焙烧后的产物由无规则的块状形貌转变成颗粒形态为花瓣状的特征形貌。所得发光材料在355nm波长的紫外光激发下获得波长为469nm的明亮蓝光,而且发光强度最高。
채용용효-응효법,이포도당위표면활성제,성공지합성료삼유화상적Sr2MgSi2O7∶Eu2＋람색형광분。이용X사선연사의、소묘전경、형광광보의대산물적결구、형모화발광성능진행료분석。결과표명,첨가괄량적포도당대산물적결구무영향,단가개변산물적형모화제고발광성능。당포도당함량위0.03g/mL시,배소후적산물유무규칙적괴상형모전변성과립형태위화판상적특정형모。소득발광재료재355nm파장적자외광격발하획득파장위469nm적명량람광,이차발광강도최고。
Three-dimensional flower-like Sr2MgSi2O7∶Eu2＋ blue luminescent materials were successfully synthesized by sol-gel method with glucose as surfactants.The phase structure,morphologies and luminescence properties of Sr2MgSi2O7∶Eu2＋ were investigated by X-ray diffraction（XRD）,scanning electron microscopy（SEM） and photoluminescence spectroscopy（PL）.The results showed that the appropriate amount of glucose could change the morphologies of product and improved the luminescence properties,but had no pronounced effects on the structure of products.When the concentration of glucose was 0.03g/mL,shape of products changed from flakes or chunk to the obvious flower-like patterns at 1200℃ for 2h.The products emitted bright 469nm blue fluorescence when excited by 355 nm ultraviolet radiation,and the luminous intensity was the strongest.