Advertisements
Advertisements
Question
What is a solar cell?
Advertisements
Solution
It is a semiconductor device used to convert photons of solar light into electricity. It generates emf when solar radiation falls on the p-n junction. A p-type silicon wafer of about 300 μm is taken over which a thin layer of n-type silicon is grown on one side by the diffusion process.
APPEARS IN
RELATED QUESTIONS
If a small voltage is applied to a p-n junction diode, how will the barrier potential be affected when it is (i) forward biased
Using the necessary circuit diagrams, show how the V-I characteristics of a p-n junction are obtained in
Forward biasing
How are these characteristics made use of in rectification?
Describe, with the help of a circuit diagram, the working of a photodiode.
The current in the forward bias is known to be more (~mA) than the current in the reverse bias (~μA). What is the reason, then, to operate the photodiode in reverse bias?
Describe briefly, with the help of a diagram, the role of the two important processes involved in the formation of a p-n junction.
Explain photodiode.
What is the magnitude of the potential barrier across a Ge p-n junction?
Pressure P varies as P = `alpha/beta "exp" (- (alpha x)/"k"_"BT")`, where x denotes the distance, kB is the Boltzmann's constant, T is the absolute temperature and α and β are constant. The dimension of β is ______.
Which one of the following is not the advantage of LED?
The value of power dissipated across the Zener diode (Vz = 15 V) connected in the circuit as shown in the figure is x × 10–1 watt. The value of x, to the nearest integer, is ______.
