摘要
利用稀土直接掺杂工艺合成了一种“常光充能”型电子陷获材料 Ca S∶Eu,Sm,它不仅具有 Ca S∶ Eu无机发光材料的荧光光谱特性 ,而且具有红外升频转换特性 ,可将 0 .8~1 .6μm的红外光直接转换为~ 672 nm的红光、量子效率高达 76% ,是一种优于 Ca S∶ Eu的光转换农膜添加剂 .而共掺 Eu2 +、Sm3+和 Cu+的 Ca S荧光粉有望成为一种性能优于光转换农膜添加剂 Ca S∶ Eu2 +,Cu+。
Electron trapping material CaS∶Eu,Sm has been prepared by the technique of rare earth doping directly.It can not only possess the fluorescent characteristics of CaS∶Eu,but also convert infrared light (0.8~1.6μm) to visible light (~672nm) and its quantum efficiency is more than 76%.According to the solar spectra and the best spectrum of plant growth as well as the fluorescence spectrum of CaS∶Eu,Sm,it is explained that CaS∶Eu,Sm phosphor is good additive of the light conversion agricultural film.Moreover,the absorption spectrum of chlorophyll photosynthesis can be imitated and infrared light can be converted to visible light by the light conversion agricultural film if CaS∶Eu 2+ ,Sm 3+ ,Cu + phosphor is used as additive,so it may be thought that CaS∶Eu 2+ ,Sm 3+ ,Cu + phosphor is better than CaS∶Eu 2+ ,Cu + phosphor as additive in the light conversion agricultural film.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2001年第4期487-491,共5页
Acta Photonica Sinica
基金
国家自然科学基金!( 699780 1 8)
西安交通大学科研基金
理科基金资助项目