1. Sunlight shines on the semiconductor pn junction to form a new hole-electron pair. Under the action of the pn junction electric field, holes flow from the n-zone to the p-zone, and electrons from the p-zone to the n-zone, which are formed after the circuit is turned on Current. This is the working principle of photovoltaic effect solar cells.

2. Solar power generation methods -There are two methods of solar power generation, one is the light-heat-electric conversion method, and the other is the light-electric direct conversion method:
①The light-heat-electric conversion method uses solar radiation to generate electricity. Generally, a solar collector converts the absorbed heat into vapor of the working fluid, and then drives a steam turbine to generate electricity. The former process is a light-heat conversion process; the latter process is a heat-electric conversion process.

2. Features and advantages of solar panels:

①High conversion rate, high efficiency output;

②Excellent low light effect;

③Unique technology makes the components beautiful, strong and wind-resistant, and easy to install;

④Solar panels have a wide range of applications and many fields;

⑤Save resources, save electricity and energy, simple operation;