There are some advantages of photodiode which are given below,
- The photodiode has better frequency response, linearity and spectral response than LDR.
- Photodiode is suitable in instrument that tests the laser pulse shape.
- It can operate at high frequencies in the order of 1 MHz.
- It can be used as variable resistance device.
- It is highly sensitive to the light.
- It has lower noise.
- Fastest photo detector.
There are some disadvantages of photodiode which are given below,
- It has rapid increase in dark current with temperature.
- It has small active area.
- There is necessity of amplification at low irradiances.
- It needs offset voltage.
