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Solar Cell Physics and Technologies
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Solar cells are based on semiconductor pn junctions. Absorption of sunlight is optimal at bandgap energies near one electron volt, and greatly increases the reverse current density. The efficiency of the cell is described by the “filling factor”, and is limited, for single junction cells, by the Quiesser–Shockley limit, near 30 percent. Tandem cells, series combinations of cells, absorb a larger portion of the solar spectrum with higher efficiency but with greater complexity and cost. Such cells are used with focusing optics that inherently raises the efficiency, but also the complexity and cost. This is a textbook for physics, chemistry and engineering students interested in the future of energy as impacted by depletion of fossil fuels, and in the effects of fossil fuel burning on climate.
Title: Solar Cell Physics and Technologies
Description:
Solar cells are based on semiconductor pn junctions.
Absorption of sunlight is optimal at bandgap energies near one electron volt, and greatly increases the reverse current density.
The efficiency of the cell is described by the “filling factor”, and is limited, for single junction cells, by the Quiesser–Shockley limit, near 30 percent.
Tandem cells, series combinations of cells, absorb a larger portion of the solar spectrum with higher efficiency but with greater complexity and cost.
Such cells are used with focusing optics that inherently raises the efficiency, but also the complexity and cost.
This is a textbook for physics, chemistry and engineering students interested in the future of energy as impacted by depletion of fossil fuels, and in the effects of fossil fuel burning on climate.
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