Solar energy is directly converted into electrical energy. A solar cell is a device that directly converts light energy into electrical energy by photoelectric effect or photochemical effect.
Solar energy is the collective name for solar energy and solar thermal energy. What is developed at this stage should be to convert solar energy into electrical energy for use.
How solar energy works. panels convert light? Can be converted into electrical energy
The question of whether solar energy is converted into electrical energy or chemical energy is:
< p>There are two main ways to convert solar energy: electrical energy and chemical energy.First, solar energy can be converted into electrical energy. A solar panel is a device that converts solar energy into electricity.electric energy. Thanks to the photovoltaic effect, solar panels convert light energy from the sun into electrical energy. The advantage of this conversion method is that it can be used directly where electrical power is needed, and can also be used in combination with storage equipment to provide energy at night or on cloudy days. In addition, the electricity generated by solar panels can be directly used in various electrical equipment, such as electric vehicles, household appliances, etc.
In addition, solar energy can also be converted into chemical energy. Through photosynthesis, plants use solar energy to convert carbon dioxide and water into organic matter (like glucose). This conversion process can be thought of as storing solar energy in chemicals. Likewise, solar energy can be convertedie into chemicals (such as hydrogen or methanol) through photocatalytic or electrochemical processes. These chemicals can be used as fuel and in other industrial processes.
Therefore, the conversion of solar energy can be electrical energy or chemical energy. Different conversion methods have different application scenarios and advantages. In practical applications, the appropriate conversion method can be selected according to specific needs and conditions. Whether converted into electrical energy or chemical energy, solar energy is a clean and renewable energy source that is of great importance in reducing dependence on fossil fuels and protecting the environment.
How do solar panels convert light energy into electrical energy~?
Solar panels are team componentsment which absorb sunlight and convert the energy of solar radiation into electrical energy directly by photoelectric effect or indirectly by photochemical effect. It is an energy-saving and environmentally friendly power generation product. It has been rapidly developed and promoted in recent years and is widely used in the construction of large-scale photovoltaic power plants, household distributed solar power generation systems, mobile device charging products, and aerospace technology .
1. Solar panels mainly consist of the following parts
1. The types of cells used in solar panels can be distinguished. There are mainly monocrystalline silicon, polycrystalline silicon and amorphous silicon. Among them, monocrystalline silicon cells and polycrystalline silicon cells have production equipment and technology.Simple actions, and the product conversion rate is high, but they consume a lot of materials and silicon losses. the cost of cells is also high. Amorphous silicon cells are also called thin film solar cells, including amorphous silicon germanium, copper indium gallium selenide, gallium arsenide, cadmium telluride, etc. Due to the complex production process, the equipment and technology costs are relatively high, but because they do not use silicon material, the cell cost is very low and the photoelectric conversion efficiency has reached the level of crystalline silicon. Even gallium arsenide is widely used in high-end fields such as aerospace satellites with good low-light power generation. performance and can generate electricity under light. It is light, thin and soft. The characteristicsnt also unrealizable with crystalline silicon cells.
2. The packaging material to protect the cells. Crystalline silicon cells cannot be bent and must use ultra-white tempered float glass with high light transmittance of more than 90%. plastic and ultra white tempered float glass.
3. Transparent EVA material, used for bonding, fixing and protecting packaging materials and battery sheets. The quality of EVA materials directly affects the lifespan of solar panels, but it is not easy to distinguish between good and bad when purchasing, so it is relatively safe to buy solar panels of big brands.
4. Others include junction boxes, sealing silicone, protective laminates, etc.
2. Application areas of solar panels
1. Large, medium and small power generation systems such asphotovoltaic solar power plants, power generation on exterior glass walls of commercial buildings, distributed solar power. generation for residential households.
2. New energy vehicles, drones, satellites and outdoor mobile charging equipment.
3. Bus stops, park pavilions, street lights, traffic lights, signal towers, etc.
4. Power supply system for disaster relief equipment, power supply system for offshore operation platform, etc.
3. The power generation principle of solar panels
When sunlight irradiates the surface of the solar cell, part of the photons are absorbed by silicon materials or materials such as copper selenide , indium and gallium; the energy of the photons is transferred to the silicon atoms, etc., causing the electrons to transition and becomefree electrons that gather on both sides of the P-N junction to form a potential difference. If this happens When a circuit is turned on, under the action of voltage, current flows through the circuit to produce a certain output power, which is the process of photon conversion. energy into electrical energy.
Article source: Zhongyi Xingye, thin-film solar technology expert
Solar power generation methods There are two power generation methods solar, one being light, heat and electricity. the other is the light-heat-electricity conversion method. One is the direct light-electricity conversion method. (1) The light-heat-electricity conversion method generates electricity using thermal energy generated by solar radiation. Generally, a solar collector converts the absorbed thermal energy into steam as the working fluid, thens drives a steam turbine to produce electricity. (2) Direct light-to-electricity conversion method This 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. A solar cell is a device that directly converts solar energy into electrical energy through the photovoltaic effect. When the sun shines on the photodiode, the photodiode converts light energy from the sun into electrical energy, producing current. When many batteries are connected in series or parallel, a solar cell array with relatively large output power can be formed. From the Baidu Encyclopedia.