水热法合成CaWO_4荧光体的研究  

Synthesis of CaWO 4 Phosphors with the Hydrothermal Method

作　　者：蔡少华[1,2] 党华 李沅英[1,2] 冯守华[1,2] 

机构地区：[1]中山大学化学系 [2]吉林大学化学系无机水热合成开放实验室

出　　处：《高等学校化学学报》1998年第5期691-693,共3页Chemical Journal of Chinese Universities

基　　金：吉林大学无机水热合成开放实验室资助

摘　　要：钨酸钙是Ｘ射线和紫外线常用的发光材料，通常都用高温固相反应法合成，我们曾研究过用微波热法合成［１］．水热法是合成无机微孔材料、快离子导体等物质的重要方法，但用来合成荧光体仍少有报道．１９９０年Ｋｕｔｙ等［２，３］首次报道用水热法合成硼铝酸盐荧光体．水...It is the first report of using the hydrothermal method to synthesize powder crystal CaWO 4 phosphors whose structure is a kind of tetragonal structure with lattice parameters a = 0.524 8 nm, c = 1.135 5 nm. The phosphors have excitation spectra peak at λ ex =233 nm, and emission spectra peak at λ em =426 nm. Under 254 nm excitation, the phosphors were measured by FMS 1 chromatic detector, and its chromatic coordinates are x =0.172 5, y =0.142 4 respectively. The particle size distribution was measured by JWY laser particle size analyzer and its medium diameter is 3.90 μm, D 75 / D 25 =3.93/2.27=1.73, its volume specific surface area is S V =24 368 cm -1 .

关 键 词：水热合成 钨酸钙 荧光体 合成 

分 类 号：O614.231[理学—无机化学]