Working principle of solar photovoltaic power generation: Solar photovoltaic power generation relies on solar cell modules, utilizing the electronic characteristics of semiconductor materials. When sunlight shines on the semiconductor PN junction, a strong built-in electrostatic field is generated in the P-N junction barrier region, resulting in the generation of non-equilibrium electrons and holes in the barrier region or the diffusion of non-equilibrium electrons and holes outside the barrier region into the barrier region. Under the action of the built-in electrostatic field, Moving in opposite directions and leaving the barrier region, the result is an increase in the P-region potential and a decrease in the N-region potential, which generates voltage and current in the external circuit and converts light energy into electrical energy.
