Physics · I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator
Photodiode is a device
Photodiode is a device
- A. Which is always operated in reverse bias
- B. Which is always operated in forward bias
- C. In which photo current is independent of intensity of incident radiation
- D. Which may be operated in forward or reverse bias
Step-by-step solution
A photodiode is a semiconductor device that converts light into an electric current. It is always operated in reverse bias to achieve a wide depletion region, which increases its sensitivity to light and allows a photocurrent proportional to the incident light intensity to flow. Operating in forward bias would produce a large dark current and reduce sensitivity.
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