Solar power generation principles

Solar cells is a response to a light and solar energy can be converted into electrical devices. Photovoltaic effect can produce many kinds of materials, such as: silicon, polycrystalline silicon, amorphous silicon and gallium arsenide, indium selenium, such as copper. They are basically the same principle of power generation, is described as an example to crystal-generating process. P-type silicon crystal doped phosphorus available through N-type silicon, a P-N guitar.

When the light exposure solar surface, the silicon material was part of photon absorption of the photon energy transfer to the silicon atoms to have taken place in the electronic transfer, a free e-P-N in the end both sides gather formed a potential difference, when When connected to an external circuit, in the role of the voltage, current will flow through an external circuit have a certain power output. This process, in essence, is: photon energy into electrical energy process.