The sunlight shines on the semiconductor p-n junction, forming new hole electron pairs. With the use of an internal electric field in the p-n junction, photo generated holes flow to the p-region, and photo generated electrons flow to the n-region. After the circuit is connected, current is generated. This is the working principle of photoelectric effect solar cells. Solar cells, also known as "solar chips" or "photovoltaic cells," are a type of semiconductor thin film that uses a solar stylus to directly generate electricity. As long as it is illuminated by light that meets certain illumination conditions, it can instantly output voltage and generate current in the presence of a circuit.

　　The working principle of solar cells is based on the photovoltaic effect of semiconductor PN junctions. The so-called photovoltaic effect is an effect in which the distribution of charges within an object changes when illuminated, resulting in the generation of electromotive force and current. When sunlight or other light irradiates the PN junction of a semiconductor, a voltage occurs on both sides of the PN junction, called photogenerated voltage. There are two ways to generate solar power, one is the light heat electricity conversion method, and the other is the light electric pen direct conversion method.

　　Solar cells are devices that directly convert light energy into electrical energy through photoelectric or photochemical effects. Crystal silicon solar cells that work with photoelectric effects are the mainstream, while thin film cells that work with photochemical effects are still in the early stages of implementing solar cells.

Read recommendations:

Coin Battery CR 2016

Why is lithium iron phosphate battery more expensive than ternary lithium batteries.Column rechargea

AG Coin battery application

18650 li ion battery

12V23A battery