Abstract
Tuning the Optical Properties of Quantum Dots to Increase the Efficiency of Solar Cells
Highlights
With energy needs growing worldwide and a decrease in the amount of fossil fuel, there has been a massive increase in the importance of alternative and renewable energy sources, including solar, wind, tidal, geothermal, etc
We have modelled the energy needed by a photon in Equation 4, which is essentially the first exciton energy: This equation is representative of how altering a, the radius of the quantum dot, can affect the exact energy needed to excite an electron, i.e. the first exciton energy or the band gap energy of the quantum dot
The major sources of energy losses in the case of colloidal QDs (CQDs) PVs and especially concerning the CQDs have been analysed and solutions have been proposed to reduce these losses. These solutions may not be immediately implementable at a commercial level, but their success on an experimental level verifies that the future holds prospects of minimising the major energy losses in Quantum Dot Solar Cells (QDSC)
Summary
With energy needs growing worldwide and a decrease in the amount of fossil fuel, there has been a massive increase in the importance of alternative and renewable energy sources, including solar, wind, tidal, geothermal, etc. Since at least 33% of available energy is lost due to thermalization and 19% is not absorbed because it has a greater wavelength than the solar cell’s band gap, there is a possibility to increase the power conversion efficiency (PCE) of the photovoltaic panel by transforming unused or lost energy into electrical power This has been recognized by researchers worldwide, who are trying to develop novel methods to achieve higher PCE values. Providing better electric conveyance and increased absorption for quantum dots, in situ methods are generally favored Such techniques lead to a low percentage of the thin film surface being covered by QDs. If we take the case of the deposition of cadmium sulfide on a thin porous titanium dioxide film, only about 20% of the surface is covered. I will set out to create a model to absorb a much larger span of the solar spectrum through our cell, simultaneously keeping the engineering limitations in mind
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