电子束交替蒸发制备蓄能发光膜及其性能研究

Study on the Preparation and Properties of Light-Storing Ceramic Films Deposited by Alternate Electron Beam Evaporation Method

摘要:

使用真空电子束交替蒸发的方法，在DMD-450型真空镀膜系统中，通过调整Sr2CO3、Al2O3、Eu2O3、Dy2O3独立原料靶材的蒸发时间和蒸发周期次数，制得蓝绿色(GF) 和蓝紫色(PF)发光膜。在以铝酸盐为基质的蓄能发光膜中，改变铝与锶的摩尔比，将出现Eu2+的4f65d1→4f7多颜色宽带跃迁和Eu3+的5D0→7FJ窄带跃迁。还原热处理条件对发光膜的发光性能有着重要影响：温度明显影响结晶状态；还原气氛中H2量对发光膜的发光颜色影响较小，但会影响其相对发光强度。

Abstract:

In the DMD-450 vacuum deposition system, the evaporation time and cycle times for Sr2CO3, Al2O3, Eu2O3, and Dy2O3 targets were changed by Alternate Electron Beam Evaporation method to prepare the blue-green film(GF) and the blue-purple film(PF). Variation of Al2O3/SrO molar ratio in the light-storing ceramic films with aluminate base will produce many different crystal phases which induce the various broadband 4f65d1→4f7 transitions of Eu2+ and the narrowband 5D0→7FJ transitions of Eu3+. Annealing conditions has great influence on the luminescent properties of the films, among which annealing temperature affects crystallization and the H2 proportion in annealing atmosphere has little influence on the film color but will affect its intensity.