Solar cells do not necessarily require strong or direct light to produce electricity, as long as the light intensity reaches a certain level. Some solar cells can produce electricity in low light conditions. In addition to sunlight, light emitted by other light sources (such as electric lamps, LEDs, etc.) can also be used to generate electricity from solar cells, provided that the wavelength and intensity are appropriate. Different types of solar cells have some differences in low light performance. The solar cells currently on the market are mainly silicon-based thin-film solar cells and monocrystalline silicon solar cells. The low-light performance of silicon-based thin-film solar cells is better than thisThere are monocrystalline silicon and polycrystalline silicon cells. The current output can be clearly detected indoors or under electric lights, but whether the current intensity can meet the needs of electric charging. depends on the performance of the solar panel and determined by the demand of electrical appliances.
How do solar panels work?
Solar panels convert light energy into electrical energy.
When sunlight shines on a solar cell, photovoltage is generated, which is the photovoltaic effect. If a load is connected to both ends of the solar cell at this time, a photocurrent will be generated, thereby generating electrical energy. Solar power generation is called photovoltaic power generation.
The solar photovoltaic power generation system is a new type of power generation system that uses theThe photovoltaic effect of semiconductor materials in solar cells to directly convert solar radiation energy into electrical energy.
Independent photovoltaic lighting systems typically use batteries as energy storage devices to store electrical energy produced by solar cells during the day and power lighting loads at night.
1. Sunlight shines on the p-n junction of the semiconductor, forming new hole-electron pairs. Under the action of the electric field of the p-n junction, the holes flow from the n region to the p region, and the electrons. circulates from the region p. It flows to zone n and a current is formed after the circuit is turned on. This is how photovoltaic solar cells work.
2. Solar power generation methods There are two solar power generation methods, one is the conversion of light-heat-electricity and the other is direct light-electricity conversion method:
p>①Light - Thermal-electric conversion method generates electricity using the generated thermal energy by solar radiation. Generally, a solar collector converts the absorbed thermal energy into steam as the working fluid and then drives a steam turbine to produce electricity. The first process is a process of converting light into heat; the second process is a process of converting heat into electricity.
② The direct light-to-electricity conversion method uses the photoelectric effect to directly convert solar radiation energy into electrical energy. The basic device for converting light into electricity is the solar cell.
Detailed information1. The solar panel (also called solar cell module) is an assembly of severalOur solar cells assembled together. It is the core part of the solar power generation system and the most important part of solar energy. generation system.
2. Features and advantages of solar panels:
①High conversion rate, high efficiency;
②Excellent low light effect;
③ Unique craftsmanship makes the components that are beautiful, strong, wind and snow resistant and easy to install;
④ Solar panels have a wide range of applications and many fields
⑤ Save resources; , save electricity and save energy, easy to use