Home
Class 12
PHYSICS
Why is photodiode used in reverse bias ?...

Why is photodiode used in reverse bias ?

Text Solution

Verified by Experts

The current in the forward bias is primarily due to major carriers but in reverse bias it is due to minor carriers. As the fractional change in the reverse current due to the photo-effects is more easily measurable than in the forward bias current. So photodiodes are operated in the reverse bias.
Promotional Banner

Topper's Solved these Questions

  • SEMI-CONDUCTORS ELECTRONICS

    OSWAAL PUBLICATION|Exercise TOPIC -2 SEMICONDUCTOR DIODES AND THEIR APPLICATIONS (SHORT ANSWER TYPE QUESTIONS- I)|9 Videos

  • SEMI-CONDUCTORS ELECTRONICS

    OSWAAL PUBLICATION|Exercise TOPIC -2 SEMICONDUCTOR DIODES AND THEIR APPLICATIONS (SHORT ANSWER TYPE QUESTIONS- II)|9 Videos

  • SEMI-CONDUCTORS ELECTRONICS

    OSWAAL PUBLICATION|Exercise TOPIC -1 ENERGY BANDS ( LONG ANSWER TYPE QUESTIONS-II)|2 Videos

  • Sample Paper 8

    OSWAAL PUBLICATION|Exercise Exercise|37 Videos

  • SOLVED PAPER (II PUC JULY 2016)

    OSWAAL PUBLICATION|Exercise PART D|11 Videos

Similar Questions

Explore conceptually related problems

What are photodiodes?

Draw the circuit diagram of an illuminated photodiode in reverse bias. How is photodiode used to measure light intensity ?

The current in the forward bias is known to be more (mA) than the current in the reverse bias ( ~ mu A). What is the reason, then why photo diodes is to operate in reverse bias.

What are photodiodes used for ?

In case of p-n junction diode at high value of reverse bias, the current rises sharply without damaging the diode. The value of reverse bias is known as :

Why lipase are used in detergents?