3C-SiC纳米颗粒量子限制效应的实验证据

报道了关于3C—SiC纳米颗粒量子限制效应的实验证据．将电化学腐蚀3C—SiC多晶靶材得到的多孔材料在水溶液中进行超声处理，制备出发光的3C—SiC纳米颗粒溶液．透射电镜实验表明，所得颗粒直径分布在1-6nm范围，光致发光谱实验给出了存在量子限制效应的实验证据．发光范围在440-460nm．SiC纳米颗粒量子限制效应的发现，为该材料在光电子发光器件中的应用提供了重要的实验基础．

Experimental evidence for quantum confinement in 3C - SiC nanoparticles

We report recent experimental evidence for the quantum confinement effect in 3C - SiC nanoparticles. By dispersing electrochemically etched polycrystalline 3C - SiC wafers into water solution we fabricated suspensions of 3C - SiC nanocrystallites that exhibited luminescence. Transmission electron microscope observations show that the nanocrystallites have diameters between 1 and 6 nm. Photoluminescence excitation spectral examinations show clear evidence of the quantum confinement with an emission band maximum ranging from 440 to 560 nm.