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Clara Chung
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Why must we place the anti-reflection glass on top of the n type semiconductor? ( Why must the sun light incident on the n type semiconductor? )
Solar cells are typically made using crystalline silicon, which is a semiconductor material. Other materials like cadmium telluride, copper indium gallium selenide, and amorphous silicon can also be used in certain types of solar cells.
Solar cells are made by first purifying the semiconductor material and then creating a thin layer of silicon on top of a substrate. This layer is then treated with various chemicals and metals to create the necessary electrical properties. The cells are then connected together to form a solar panel.
The efficiency of solar cells refers to the percentage of sunlight that is converted into electricity. Currently, the most efficient solar cells have an efficiency of around 22%, while standard solar panels have an efficiency of around 15-20%. However, research is ongoing to improve the efficiency of solar cells.
There are three main types of solar cells: monocrystalline, polycrystalline, and thin-film. Monocrystalline solar cells are made from a single, high-quality crystal of silicon, while polycrystalline solar cells are made from multiple smaller crystals. Thin-film solar cells are made by depositing thin layers of semiconductor material on a substrate.
The lifespan of solar cells can vary depending on the type of cell and the manufacturer. However, on average, solar cells can last for 25-30 years with proper maintenance. Factors like weather conditions and regular cleaning can also affect the lifespan of solar cells.