中文摘要：

以金属硝酸盐．尿素作为原料体系，引入了升华硫粉，通过低温燃烧法一步合成了硫化物体系红外响应材料。对硝酸盐．尿素体系的低温燃烧过程进行了分析，根据氧化．还原反应的化合价理论计算了尿素燃料的理论用量。燃烧点火温度为600℃，反应时间为2min～3min，产物为红色云层状疏松多孔的纳米粉末，粒径为36nm左右。对样品进行XRD物相分析证明产物为CaS晶相，面心立方结构。光谱分析表明：自然光可以有效激发样品使之储能：样品在800nm～1600nm之间具有宽光谱红外响应效应：红外转换发光峰值波长位于655nm，对应于Eu^2＋离子的4f^65d→4f^7（^8S7/2）跃迁。

英文摘要：

Infrared sensitive material CaS：Eu,Sm was synthesized by adding sublimate sulphur and using nitrate-urea as raw material system in a low-temperature combustion synthesis （LCS） method. The combustion process was discussed and the theoretical amount of urea adding was calculated according to the oxidation-reduction theory. It is found that the ignited temperature is 600℃, the reaction duration is 2 min-3 min and the product is red loose nano-powders with the size of 36 nm or so. XRD pattern shows that the product has a CaS crystal structure. Spectra analysis indicates that the sample can be excited effectively by natural light to store energy. The sample is sensitive to the infrared light of 800 nm-1600 nm and then emit a red light due to the transition 4f^65d→4f^7（^8S7/2） of Eu^2＋ ion.