P-N junction of a semiconductor diode

The working principle of a diode is treated at the 3D animated part of the video. The voltage-current characteristic of a silicon diode is recorded in forward and reverse direction at the second part.
See how the depletion layer is created between a p-type and a n-type region of a silicon crystal by recombination processes of a hole and an electron and how this barrier in potential is influenced by an external electric field.

Category:

Science & Technology

Tags:

• semiconductor
• diode
• diffusion
• hole
• electron
• electric field
• forward bias
• reverse bias
• amperemeter
• voltmeter
• ampere
• volt
• current
• voltage
• inverse voltage
• p-doped
• impurity
• atom
• ball-and-stick model
• dopant
• home video
• instruction
• education

[Myevilstyle]

You sound like arnold schwarzenegger...

[HomoFaciens]

@Myevilstyle Maybe this is the reason why I have launched the RoboSpatium, which is my Robot Space ( RoboSpatium.de ). I hope that the robot you can operate by Internet at these pages is not the great-great-...-grandfather of the Terminator series, but rather those of R2D2...

[vidyalankar100]

Hey i have a doubt.IN n-type semiconductor can the 5th valence electron take the place of a hole that is created in n-type due to thermal agitation and vice-versa for p-type semiconductor?

[HomoFaciens]

@vidyalankar100 Yes of course that can happen. But during this process, the supernumerous electron of the thermal electron-hole-creation remains at the n-type region. Vice versa, if an electron-hole-pair is created inside of the p-type region, and the electron of this process recombines with another hole, there is still one hole inside of the p-type region. I will upload another video discussing the creation and recombination of holes and electrons more detailed, soon. Be patient.

[Sten402]

I have an exam about solar cells next week. This video helped a lot.

[Elmasraro]

Your lectures are really clear and good. They helped me to understand the principles of semiconductors and p-n junctions. Hope you keep teaching us with new lectures.

Thank you very much.

[highsense100]

nice video

[oddball7342]

great description, very understandable

[MUHAMMADHAMZA430]

very good lecture