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 .
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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
关键词
水热合成
钨酸钙
荧光体
合成
Hydrothermal synthesis, Calcium tungstate, Phosphor