A modern semiconductor diode is made of a crystal of semiconductor like silicon that has impurities added to it to create a region on one side that contains negative charge carriers, called n-type semiconductor, and a region on the other side that contains positive charge carriers, called p-type semiconductor. The diode's terminals are attached to each of these regions. The boundary within the crystal between these two regions, called a PN junction, is where the action of the diode takes place.
date_rangeOct 10' 2018 / Taiwan
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date_rangeSep 13' 2018 / China
date_rangeJul 28' 2018 / China