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What is the basic principle of a solar cell?
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A solar cell converts light energy into electrical energy by utilizing the photovoltaic effect.
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What materials are commonly used to make solar cells?
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Silicon is the most commonly used material for solar cells, but other materials like cadmium telluride (CdTe) and copper indium gallium selenide (CIGS) are also used.
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What role does the PN junction play in a solar cell's operation?
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The PN junction helps separate the electric charges generated when light strikes the cell, creating a flow of electricity.
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How does light intensity affect solar cell performance?
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Increased light intensity generally increases the electrical output of a solar cell due to more photons being available to excite electrons.
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What is the function of an anti-reflective coating in solar cells?
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Anti-reflective coatings minimize the reflection of sunlight from the surface of solar cells, enhancing their efficiency.
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What are thin-film solar cells?
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Thin-film solar cells are made by depositing one or more layers of photovoltaic material on a substrate, offering flexibility and lower costs.
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What is quantum efficiency in solar cells?
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Quantum efficiency measures a solar cell's ability to convert incident photons into electric current over a range of wavelengths.
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How does temperature affect the efficiency of solar cells?
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Higher temperatures generally decrease the efficiency of solar cells by increasing the rate of recombination of charge carriers.
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What is the Fill Factor in the context of solar cells?
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The Fill Factor is a parameter which determines the maximum power output of a solar cell relative to its theoretical maximum power.
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What does the term 'band gap' mean in solar cells?
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The band gap refers to the energy difference between the valence band and conduction band of a material. It's crucial for determining a material's ability to absorb specific light wavelengths.
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How are solar cells arranged in a practical solar panel?
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Solar cells are electrically connected in series and parallel configurations to achieve the desired voltage and current output in a solar panel.
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What is the role of the inverter in a solar power system?
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An inverter converts the DC electricity generated by solar panels into AC electricity, which can be used by home appliances and the grid.
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What are monocrystalline solar cells?
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Monocrystalline solar cells are made from a single continuous crystal structure, known for their high efficiency and durability.
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What is the impact of shading on solar panel performance?
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Shading can significantly reduce the power output of a solar panel as it decreases the number of photons available for conversion into electricity.
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What is a solar cell's 'short-circuit current'?
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The short-circuit current is the maximum current generated by a solar cell when its output terminals are shorted, representing the optimum photon excitation effect.
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