Ca_(1-n)Ba_nS:Cu^+,Eu^(2+)的合成及其光谱特征

SYNTHESIS AND SPECTRA CHARACTERISTICS OF Ca 1-n Ba n S:Cu + ,Eu 2+ PHOSPHORS

研究了Ｃｕ＋，Ｅｕ２＋共激活的Ｃａ１－ｎＢａｎＳ的发光性质、余辉特性、基质组份Ｃａ／Ｂａ摩尔比与发光性质的关系．随着基质中Ｂａ含量的增加，Ｃｕ＋的蓝区发射带（４１６ｎｍ附近）及Ｅｕ２＋的红区发射带（６３０ｎｍ附近）均逐渐向绿区移动，且蓝光与红光的相对发射强度发生变化．实验证明，Ｃａ１－ｎＢａｎＳ：０．００５Ｃｕ＋，０．００１Ｅｕ２＋是一种红、蓝发射强度可调的单基双能光转换材料．

The fluorescence of Cu + , Eu 2+ coactivated Ca 1-n Ba n S is reported in this paper The blue emission band (about 416 nm) of Cu + and the red emission band (about 630 nm) of Eu 2+ in the CaS host are shifted to the green area and the ratio of their intensity changes also with increasing Ba composition in Ca 1-n Ba n S The experimental results indicate that Ca 1-n Ba n S:0 005Cu + ,0 001 Eu 2+ is a light transforming material of monohost with two emissions, in which the red and blue emission intensities can be adjusted by changing Ba composition in the host