【摘要】 室温下测量并研究了晶态和非晶态Y1.6SiO5:Eu03.+4的激发和发射光谱,发现Y1.6SiO5:Eu03.+4呈现5D0→7F0,5D0→7F1,5D0→7F2跃迁发光光谱.在非晶态时5D0→7F0跃迁发光峰位于579 nm;5D0→7F1跃迁光谱呈现宽峰,峰值位于587nm;5D0→7F2呈现一个强的发射单峰位于612nm.晶态时5D0→7F0发光峰强度及峰位不变,5D0→7F1发射光谱分裂成三重尖峰,5D0→7F2发光峰相对强度减弱,在长波段呈现新的发射峰.更多还原

【Abstract】 Excitation and emission spectra of crystal and amorphous Y1.6SiO5:Eu3+0.4 were measured at room temperature.It is found that Y1.6SiO5:Eu3+0.4 prepared in the experiment shows the emission spectra of 5D0→7F0,5D0→7F1,5D0→7F2 transitions.In the amorphous samples,emission peak of the 5D0→7F0 transition is located at 579 nm,the 5D0→7F1 transition at 587nm shows a broad emission peak,and strong emission single peak at 612nm corresponds to 5D0→7F2 transition.However,in Y1.6SiO5:Eu3+0.4crystal,emitting speactrum of 5 D0 →7F0 transition is almost unchanged,5D0→7F1 transition,which is mainly magnetically allowed,is split from a broad single peak into sharp triple peak,and the strong emission at 612nm corresponding to 5D0→7F2 transition is weakened and displays a new shoulder peak at the longer wavelength.更多还原