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单晶硅在氢氟酸溶液中阳极氧化可制得多孔硅,多孔硅是一种以新形态存在的硅,与单晶硅相比,它表现出独特的物理性质和化学活性。荧光光谱峰的蓝移表明,在p-型低掺杂衬底硅上形成的多孔硅中存在量子尺寸效应,新近获得的Raman光谱也证实了这一点。
Monocrystalline silicon is anodized in hydrofluoric acid solution to produce porous silicon, a form of silicon present in a new form that exhibits unique physical and chemical properties compared to monocrystalline silicon. The blue shift of the fluorescence peak shows that there is a quantum size effect in the porous silicon formed on the p-type low-doped silicon substrate, as evidenced by the recently obtained Raman spectra.