WEEK 1-2

After the first meet with the supervisor, we were going to search for the related information on the project specifically. In the first week, we need to find and master the concepts of metal-semiconductor diodes. As the results, it was necessary to know the basic characteristic of metal-semiconductor contacts.

Refer to Semiconductor Devices (2^nd edition), written by S.M.Sze, we get the information that the metal practical semiconductor contacts was the first practical semiconductor device in the form of a point contact rectifier. A metallic whisker pressed against a semiconductor.

The characteristics of point contact rectifiers were not reproducible from one device to another, which have been largely replaced by metal-semiconductor contacts fabricated by planar processes.

The following figures are the results of the information about metal semiconductor devices for log book.

Figure 1

Figure 2

Figure 3

Figure 4

Written in 24th Feb, 2013