Physics A-Level
Reverse-biased p-n junction operation
What Reverse-biased p-n junction operation means in Physics A-Level, as defined for AQA.
Definition of Reverse-biased p-n junction operation
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Reference: AQA
A photodiode is operated in reverse bias, so the p-n junction has a wide depletion region and a strong internal field.
Topics that use Reverse-biased p-n junction operation
- Photodiode (A-level only) (AQA A-Level)
Related terms
- Band gap and photon energy
- Photo-conductive mode
- Photocurrent
- Photocurrent against voltage at fixed irradiance
- RC time constant
- Responsivity against wavelength
- Reverse bias
- Scintillator
Using Reverse-biased p-n junction operation in the exam
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