【摘要】 用场发射扫描电子显微镜研究了用直流化学腐蚀和脉冲电化学腐蚀方法制备的多孔硅(PS)的微结构,观察并测试了孔洞的垂直度、深度以及洞宽(直径),对PS的纵向微结构进行了二次电子图像和背散电子图像的分析。使用高灵敏的共焦显微Raman系统研究了纵向的Raman谱,同时分析了微结构对纵向Raman效应的影响。更多还原

【Abstract】 The micro-structures of porous silicon(PS) prepared by DC electro-etched and pulse electro-etched are studied with the help of a field emission scanning electron microscope. The verticality, depth and width(diameter)of the pores are observed and measured. The vertical micro-structures of the PS are analyzed by studying the double electron pictures and the back scattered electron imagery . The vertical Raman spectra are studied by means of the high sensitive co-focused micro-Raman system . The effects of the micro-structure on the vertical Raman spectra are analyzed in the meantime.更多还原