How do solar panels generate electricity? What are the advantages of solar energy?

Solar panels work by utilizing the photoel、ectric effect, also known as the photovoltaic effect. The photovoltaic effect refers to the phenomenon that an object generates an electromotive force due to the absorption of photons. Photovoltaic effect occurs when sunlight or other light strikes the PN junction of a semiconductor. The photogenerated effect causes a voltage to appear on both sides of the PN junction, which is called photogenerated voltage. If the PN junction is shorted, current will flow.

Advantages of using solar energy:

(1) Solar energy collection is simple. There are no geographical restrictions. And can be directly developed and utilized. This can greatly reduce labor costs and resource costs.

(2)Solar energy is a green resource that will not pollute the environment. This energy is very important in today's serious environment pollution.

(3) The solar radiation energy reaching the earth's surface every year is equivalent to about 130 trillion tons of coal, the total amount of which is the largest energy that can be developed in the world today.

(4)Solar energy is inexhaustible.