机构地区: 天津大学理学院
出 处: 《Transactions of Tianjin University》 1999年第1期98-100,共3页
摘 要: 用两种电阻率的Si片在不同阳极化反应条件下制得4片多孔硅样品.利用SPEXFL-111型荧光光谱仪测出样品在紫外光激发下的发射光谱,得到多孔硅的蓝紫光发射.根据实验结果,提出衬底的电阻率对光致发光(PL)光谱峰位有决定作用. Porous silicon samples are made on Si wafers with different resistivities under different anod ic-react ion conditions. Visible photoluminescent spectra of porous silicon (PS) at room temperature are measured using a fluorescent spectrograph where blue-violet light is observed. The decision of the resistivity of Si substrates is provided.