Sun is the ultimate source for power. We see that some calculators work with the help of solar cell. The calculator works with the help of solar power. Electricity is of prime importance from its origin. The sun shines with the energy of about 1000 W per square meter on the earth. We must utilize the power of the sun to the maximum extent. Solar cells utilization increases nowadays.
The advanced technology in the semiconductor is the use of concentrators. It increases the efficiency of the solar cell to a great extent. The light must be focused on the desired cells to gather more light. It follows the roadway of the sun using single-axis tracking. Two-axis tracking is used to adjust according to height variations of the sun. Concentrators are widely used in Electricity generation.
It does not have a significant path in the area of photovoltaic. The focus of light on the cell increases the efficiency. The electrochemical cells have their active component in liquid. The light absorption is by the dye sensitizer. It makes use of cheap materials.
The electrochemical cells are now appearing with 120cm2 at an efficiency of about 7%. Photovoltaic cells can be close to heat source with 2420 F with the help of thermo photovoltaic cells. The institutes are investigating the low band gap III-V compounds. The Germanium is found to be the low cost in these alternatives.