24v 1kw inverter

AC Charge Current: 0-35A adjustable

Grid type: Off grid

Type: DC/AC Inverter

Solar Cell Efficiency

Efficiency is a design concern for photovoltaic cells, as there are many factors that limit their efficiency. The main factor is that 1/4 of the solar energy to the Earth cannot be converted into electricity by a silicon semiconductor. 

The physics of semiconductors requires a minimum photon energy to remove an electron from a crystal structure, known as the band-gap energy. 

If a photon has less energy than the band-gap, the photon gets absorbed as thermal energy. 

For silicon, the band-gap energy is 1.12 electron volts.

Since the energy in the photons from the sun cover a wide range of energies, some of the incoming energy from the Sun does not have enough energy to knock off an electron in a silicon PV cell. 

Even from the light that can be absorbed, there is still a problem. 

Any energy above the band-gap energy will be transformed into heat. 

This also cuts the efficiency because that heat energy is not being used for any useful task.

Of the electrons that are made available, not all of them will actually make it to the metal contact and generate electricity. 

This is because some of them will not be accelerated sufficiently by the voltage inside the semiconductor. Because of the reasons listed, the theoretical efficiency of silicon PV cells is about 33%.

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