Main materials for solar cells

Introduction The main materials of solar cells The main materials of solar cells are monocrystalline silicon and polycrystalline silicon. Polycrystalline silicon is a form of molten elemental silicon that solidifies under supercooled conditions.

Main materials for solar cells

The main materials of solar cells are monocrystalline silicon and polycrystalline silicon.

Polycrystalline silicon is a form of elemental silicon. Molten elemental silicon solidifies under supercooled conditions. The silicon atoms it contains are arranged in the form of a diamond lattice into numerous crystal nuclei. crystals, if the grains have different surface orientations, then when these grains are combined, they will crystallize into polycrystalline silicon.

Single crystal silicon is a single crystal belonging to the silicon wafer. It has a virtually complete lattice structure and is extracted from high purity polycrystalline silicon in a single crystal furnace. The purity requirement reaches 99.9999%, even 99.9999%. 99.9999999% above. Monocrystalline silicon is a relatively active nonmetallic element and an important component of crystalline materials.

Yes, theSolar cells can be used in the sun.

Solar cells, also known as "solar chips" or "photovoltaic cells", are optoelectronic semiconductor sheets that use sunlight to directly generate electricity. As long as it is illuminated by light, it can instantly produce voltage and generate current if there is a loop. Solar cells are devices that directly convert light energy into electrical energy by photoelectric effect or photochemical effect.

Principle

Sunlight shines on the p-n junction of the semiconductor, forming new hole-electron pairs. Under the action of the integrated electric field of the p-n junction, the photogenerated holes move towards. the p region and the photogenerated holes flow towards the p region. Electrons flow to area n and when the circuit is turned on, a current is generated. This is howhow photovoltaic solar cells work. There are two solar power generation methods, one is light-heat-electricity conversion method and the other is direct light-electricity conversion method.

Development prospects

The application of solar cells has penetrated industry, commerce, agriculture, communications, household appliances, public facilities and others military and aerospace sectors, particularly in remote areas. It is used in mountainous areas, deserts, islands and rural areas to save expensive transmission lines. But at this stage, its cost is still very high. It takes tens of thousands of dollars to produce 1 kW of electricity. Its large-scale use therefore remains economically limited.

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