Is the wire on the diode a type of P and N semiconductor? Or P semiconductor?
Not semiconductors, but metalsLook, this is not a PN junction. It should be a Schottky diode, a diode made of metal and a semiconductor, and a Schottky barrier
One end of the fine aluminum wire is connected to the anode lead, and the other end is pressed on the doped n type semiconductor. After adding the voltage, the fine aluminum wire melts at the contact point and penetrates into the melted part. In this way, the contact point is actually a p type semiconductor and attaches to the N type semiconductor to form a PN junction.
Gold thread is gold wire. Welding with gold wire welding machine.
