A silicon solar cell behaves like a battery with a 0.46 V terminal voltage. Suppose that 1.0 W of light of wavelength 620 nm falls on a solar cell and that 50%% of the photons give their energy to charge carriers, creating a current. What is the solar cell's efficiency that is, what percentage of the energy incident on the cell is converted to electric energy?

We have that the percentage of the energy incident on the cell that is converted to electric energy is

From the question we are told that:

Voltage

Power of light

Wavelength

50 \% of the photons give their energy to charge carriers,

Generally, the equation for number of Protons is mathematically given by

Generally, the equation for Number of electron is mathematically given by

Therefore

Total current

Where

e=electron Charge

Therefore

Generally, the equation for Power is mathematically given by

Therefore

Efficiency

In conclusion

The percentage of the energy incident on the cell that is converted to electric energy is

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