A silicon solar cell looks like a battery with a 0.80 V terminal voltage. Suppose that 1.0 W of light of wavelength 610 nm falls on a solar cell and that 50% of the photons give their energy to charge carriers, creating a current.
Part A
What is the solar cell's efficiency-that is, what percentage of the energy incident on the cell is converted to electric energy?
Express your answer using two significant figures.
Pout/Pin =_____________%
