Question

सौर सेल क्या है? सौर सेलों के लिए Si और GaAS अधिक पसंद वाले पदार्थ क्यों
What is a solar cell? Why Si and GaAs are more preferred materials​

Answer 1

Answer:

Explanation:

Si and Ga have low threshold electron potential hence they are preferred in solar cell. Answer: A) these materials are preffered because of their lower value of energy gap. SO that they can be activated using solar radiation.

Answer 2

Explanation:

Solar cells is device which converts solar energy (energy from the sun) to electrical energy.

Solar cells works on the principle of movement of electrons from their place to electron hole with the energy of photon's.

To carry out such a process we use various semi conductors.

Si, Ga and As are semi conductors

As the name suggests these are neither conductors nor insulators but something at par.

Semi conductors are substances which conduct electricity at high temperatures and act as insulators at low temperatures.

This property of semiconductor make them useful in making solar cells.