摘要
Scanning capacitance microscopy (SCM) is employed to examine iron-contaminated p-type Si samples. For slightly contaminated samples, a dc voltage of -0.8 V, applied between the sample and the conductive tip, induces positive trapped charges. Owing to the existence of these charges, the region containing trapped charges exhibits an obviously low dC/dV signal. According to contact-mode atomic force microscopy results, the surface morphology has little effect on the SCM signal. The experimental results indicate that SCM is capable of detecting the distribution of oxidation-related defects which cannot otherwise be easily observed by atomic force microscopy and transmission electron microscopy.
原文 | English |
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期刊 | Electrochemical and Solid-State Letters |
卷 | 4 |
發行號 | 9 |
DOIs | |
出版狀態 | Published - 1 九月 2001 |