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The solar battery board principle
The generation principle of solar cell:
The solar cell is a light response and can convert light energy into electrical devices. Can produce
The photovoltaic effect of many kinds of materials, such as: monocrystalline silicon, polycrystalline silicon, amorphous silicon, gallium arsenide, copper indium selenium. Their power
The same principle, the crystal as an example to describe the process of light generation.
P
Crystal silicon doped phosphorus available through
N
Silicon, forming
P
-
N
Node.
When a light ray solar cell surface, and part of the photons are silicon material absorption; the photon energy transfer to the
The silicon atom, make the electronic more moved, a free electron in
P
-
N
Both sides of the junction formed a potential difference, when the external connection
Circuit,
The effect of the voltage,
There will be a current flowing through the external circuit generates a certain output power.
This process.
Quality: the photon energy into electrical energy conversion process