truettct said:Homework Statement
A pn junction diode has saturation current Is= 1e-12 A. What is the current through this diode if a positive voltage 0.68 V is applied to it? (Unit: A)
Homework Equations
I=Is(e(Vd)/(Vt))-1)
The Attempt at a Solution
I don't even know where to begin, but i just need a good explanation and how to solve this problem to help me visually learn it. I can't find much info on the web about this problem.
Thanks
A P-N junction diode is a semiconductor device made of two layers - a P-type layer and an N-type layer. The junction between these layers creates a barrier that allows current to flow in only one direction.
When a positive voltage is applied to the P-type layer and a negative voltage to the N-type layer, it creates a depletion region at the junction. This depletion region acts as a barrier, allowing current to flow from the P-type layer to the N-type layer but not vice versa.
The symbol for a P-N junction diode is a triangle with a vertical line attached to the base. The structure consists of a P-type semiconductor on one side, an N-type semiconductor on the other, and a depletion region at the junction.
P-N junction diodes are commonly used in rectifiers, switches, and voltage regulators in electronic circuits. They are also used in photovoltaic cells for converting light into electricity.
The most common problem with P-N junction diodes is reverse bias breakdown. This can be solved by limiting the reverse voltage and current, using a diode with a higher breakdown voltage, or adding a reverse-biased diode in parallel. Other problems, such as high forward voltage drop or low forward current, can be solved by selecting the appropriate diode for the application.