摘要
The fluorescent characteristic and emission spectra of Eu<sup>2+</sup> in the cubic structureCa<sub>8</sub>Zn（SiO<sub>4</sub>）<sub>4</sub>Cl<sub>2</sub> with three kinds of cation sites is reported.The influence of temperature,Eu<sup>2+</sup> concentra-tion and excitation conditions on fluorescent properties of Eu<sup>2+</sup> are studied at 77 and 298 K.Thecoordination number of Eu<sup>2+</sup> at different sites is obtained.The green and red emission bands arise fromEu<sub>2+</sub> ions locating on eight- and six- coordinated inequivalent sites respectively.
The fluorescent characteristic and emission spectra of Eu^(2+) in the cubic structure Ca_8Zn(SiO_4)_4Cl_2 with three kinds of cation sites is reported.The influence of temperature,Eu^(2+) concentra- tion and excitation conditions on fluorescent properties of Eu^(2+) are studied at 77 and 298 K.The coordination number of Eu^(2+) at different sites is obtained.The green and red emission bands arise from Eu_(2+) ions locating on eight- and six- coordinated inequivalent sites respectively.
