【摘要】 <正> 一、引言 Y₂O₃:Eu³⁺磷光体中的Eu³⁺在6100（?）附近呈现很强的尖峰发射。这个磷光体虽然在阴极射线和短波紫外光（约2500（?））激发下是十分有效的,但是对于长波紫外光激发却很不灵敏。Datta於1967年报导在Y₂O₃:Eu³⁺磷光体中加入少量Bi³⁺,在3650（?）长波紫外光激发下可增强Eu³⁺在6100（?）的尖峰发射强度。更多还原

【Abstract】 In this peper the fluorescent spectra properties of Bi3+ and Eu3+in Y2O3-Bi2O3 system and the regularities of their variation are reported.The fluorescent spectraof Bi3+show an emission band at about 5100A under 3300A excitation. The emis-sion intensity enhances with the reduction of the Bi3+ content .Under 3500A excitation. the Eu3+ in Y2O3-Bi2O3 system gives a brigher red emission and the fluorescent intensities at about 6110A corresponding to 6D0-7F2 transition are stronger than that in Eu : Y2O3 system. In (Y1-X-0 143EuXBi0.142) 2O3 phosphor, the fluorescent intensities of Eu3+ enhance and that of Bi3+ decreases with the increaes of the Eu3+ concentration. No Eu3+ concentration quenching is observed until x=0.20 mol. These indicate that energy transfer from Bi3+ to Eu3+ occurs.更多还原