Essay On Solar Panel

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Solar Panel Solar panel is the interconnection of number of solar module to get efficient power. Solar panel is made up of solar cells. Earlier solar cells are of low efficiency and large in size but now a day very high efficient solar cells are available. Solar cell prize much higher, it is difficult to afford solar energy. Solar Cell: Solar cell is a photovoltaic device that converts light energy into electrical energy based on the principles of photovoltic effect. History: First time solar cell was developed by French Scientist Antoine-Becquerel in 1839. Becquerel obseved photovoltaic while experementing with electrolyte solution, he saw voltage developed when the light fell upon electrode.In 1941 first silicon cell was demonstrated, but research on modren solar cell was started in 1954. Solar Cell Output: Solar cell produces .7 volts, size of solar cell do not effect on the efficiency of solar cell. No matter how much large and small in size. More current will produce when surface area is large and less current will produce when surface area is small. If we need more battery charging power, we need high output cells. Solar cells directly produces dc current. Voltage supplied by solar cell Changes with change Function Of Series And Parallel Cells: Series Solar Cells: Series wiring is when you connect a positive terminal from one solar panel and connect it to the negative of another. Doing this will result in higher voltage (the sum of voltage from the panels) while the amps stay the same. Parallel Solar Cells: Parallel wiring is when you connect a positive with a positive and a negative to a negative. When you do this the voltage remains the same, meanwhile the you get higher amps. So two 12 volt/3.5 amp p... ... middle of paper ... ...ar Cells: The types of crystal used soar cells can be classified as 1. Monocrystalline silicon cell 2. Polycrystalline Silicon Cell 3. Amorphous Silicon Cell Monocrystalline Silicon Cell: Cell is produced from pure silicon crystal. Since the monocrystalline silicon is pure and defect free the efficiency of cell will be higher. Polycrystalline Sillicon Cell: Liquid silicon is used as raw material and polycrystalline silicon was obtained by sodification process.The efficiency of this type of cell is less than Monocrystalline cell. Amorphous Silicon Cell: Cell was obtained by depositing silicon on glass plate. The layer thickness amounts to less than 1µm the thickness of a human hair for comparison is 50-100 µm. The efficiency of amorphous cells is much lower than that of the other two cell types.This type is used for lower equipment such as watches calculators

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