Why Reverse Bias a Photodiode?
Most recent answer: 01/27/2014
Q:
why photodiodes are connected in reverse bias only
- omkar (age 15)
mumbai
- omkar (age 15)
mumbai
A:
Hello Omkar,
If the diode is reverse biased then the current through the diode is very very small. When photons hit the diode they will ionize a few atoms and will produce a small current which you can measure. When you forward bias the diode it will conduct lots of current and the addition of a few more additional electrons is small compared with the forward current.
LeeH
(published on 01/27/2014)