CaS（Eu，Ce）的紫外可见双重存储及双色输出特性  

Ultraviolet and Visible Optical Storage and Bi-Color Outputting Properties in CaS(Eu,Ce)

作　　者：陈述春[1] 戴凤妹[1] 

机构地区：[1]中国科学院上海光机所

出　　处：《无机材料学报》1996年第4期731-734,共4页Journal of Inorganic Materials

基　　金：国家自然科学基金

摘　　要：本文首次报道了ＣａＳ（Ｅｕ，Ｃｅ）的紫外可见双重存储及双色显示特性，通过实验研究ＣａＳ（Ｅｕ，Ｃｅ）的光致发光和激发光谱，及上转换发光和红外激励光谱，结果表明ＣａＳ（Ｅｕ，Ｃｅ）同样具有可擦除、可重写的光存储功能，当用λ≥～４５０ｎｍ波段的光写入，用波长约在８５０～１５００ｎｍ之间的红外光读出时，则能探测到橙色发光，峰波长在～６４０ｎｍ附近．而当用λ≤～３００ｎｍ的紫外光写入时，在同样读出条件下，读出信号中出现绿色发光，其三个峰波长分别在５１０、５４０和６４０ｎｍ．The ultraviolet and visible optical storage and hi-color outputting propertics in CaS(Eu,Ce) were first reported. The photoluminescence spectra, excitation spectra, up-conversion luminescence and infrared stimulated spectra in CaS(Eu,Ce) were investigated in exoeriments. The results show that the CaS(Eu,Ce)also have erasable and rewrite optical storage function. When written by light with A λ￣450nm and read by light with infrared light(850￣1500nm), the orange luminescence peaked at ￣640nm can be probed as the reading sighal. But when written with ultraviolet light with λ≤￣300nm, under the condition of identical reading, the green luminescence appears in reading sighal peaked at ￣510, ￣540 alld ￣640nm.

关 键 词：红外激励发光 电子俘获 光存储 硫化钙 光化学 

分 类 号：O614.231[理学—无机化学] O644.1[理学—化学]