Photodiode Responsivity

What is Photodiode responsivity ?

Definition: The responsivity of silicon photodiode is a measure of sensitivity to light. It is defined as ratio of photocurrent (Ip) to incident light power P at given wavelength.

Responsivity, Rλ = Ip/P

In other words, it is measure of the effectiveness of conversion of light power into electric current. It varies with the wavelength of incident light, applied reverse bias and temperature.

Definition courtesy of Photodiode Responsivity Definition,formula,calculator ( for more information and a photodiode responsivity calculator please use the link to visit their website.