Monthly Archives: November 2020

100 Keywords – Holes

Posted on November 28, 2020 by Dai

In reality, there are no holes! It just refers to positive charge. The diagram below shows positive charge travels from the left to the right of silicon. At t1, one electron is released which produces a positive charge (indicated as … Continue reading →

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100 Keywords – Silicon

Posted on November 27, 2020 by Dai

A silicon atom has 14 electrons. In its outmost shell, it has 4 valence electrons. Covalent bonding in silicon: Its resistivity drops as temperature rises. Density of free electrons in silicon can be calculated as: At T=300K,  In the same … Continue reading →

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100 Keywords – Preface

Posted on November 27, 2020 by Dai

Feng Tang once said that if you want to know a bit about a new field, go and find 100 keywords. Digest them in two or three days, and you will look like a professional. Somewhat make sense! This triggers … Continue reading →

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