How does a varactor diode work? To form the PN junction that makes a diode, half the piece is doped with a trace amount of “donor atoms” that have one more electron than the intrinsic stuff to make ...

Among passive electronic components, the fuse and diode are well known, well understood, widely used, and essential to many circuits and systems. Still, each has inherent shortcomings that make them ...

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In 1989 Shuji Nakamura was one of many scientists who were trying to develop a blue laser-diode. However, unlike his contemporaries, Nakamura was working on a semiconductor called gallium nitride.