What is short circuit current in photodiode?
Short-Circuit Current: Short-circuit current (ISC) is the current generated by a photodiode into a short circuit when the diode is illuminated. ISC depends strongly on the intensity and spectral distribution of the light source. Shunt Resistance: Shunt resistance (RSH) is the zero-bias resistance of a dark photodiode.
When photodiode conducts the current is called?
The dark current is the current through the photodiode in the absence of light, when it is operated in photoconductive mode. The dark current includes photocurrent generated by background radiation and the saturation current of the semiconductor junction.
How is the current and voltage of a Si photodiode related?
1 – 3Current vs. voltage characteristics When a voltage is applied to a Si photodiode in a dark state, the current versus voltage characteristics observed are similar to the curve of a rectifier diode as shown by in Figure 1-4.
What happens when a Si photodiode is shorted?
As for the characteristics of and , if the Si photodiode terminals are shorted, a short circuit current Isc or Isc’ proportional to the light level will flow from the anode to the cathode.
What is the cutoff frequency for a Si PIN photodiode?
†Cutoff frequency: 10 MHz or more IR-enhanced Si PIN photodiode These photodiodes have fine structures fabricated on the back side of the photosensitive area and feature improved sensitivity in the near infrared region above 900 nm.
When is the linearity of a photodiode higher?
linear with respect to the incident light level. When the incident light is within the range of 10-12 to 10-2 W, the achievable range of linearity is higher than nine orders of magnitude (depending on the type of photodiode and its operating circuit, etc.). The lower limit of this linearity is determined by the noise equivalent power (NEP), while