Why are Si and GaAs preferred materials for fabrication of solar cells?

Si and Ga have low threshold electron potential hence they are preferred in solar cell. Answer: A) these materials are preffered because of their lower value of energy gap. SO that they can be activated using solar radiation.

Which material is ideal for solar cell fabrication and why?

Material used in fabrication of solar cells. The material with band gap 1.5 e.V are ideal material for this purpose.

Why GaAs is most commonly used in making of a solar cell?

Gallium arsenide is most generally used in the production of a solar cell as it can absorb relatively more energy from the incident solar radiations because of the relatively higher absorption coefficient.

Why is GaAs preferred in spite of its higher band gap over Si for constructing a solar cell?

The GaAs is better inspite of its higher band gap than Si because it absorbs relatively more energy from the incident solar radiation being of relatively hogher absorption coefficient.

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What are the ideal material for fabrication of solar cell?

Crystalline silicon is the most common material used in solar cells. The lifespan of crystalline silicon cells is more than 25 years without deterioration, making it ideal for industrial solar power generation.

Which materials are used in solar cells?

Solar Photovoltaic Cell Basics

  • Silicon is, by far, the most common semiconductor material used in solar cells, representing approximately 95% of the modules sold today. …
  • Perovskite solar cells are a type of thin-film cell and are named after their characteristic crystal structure.

Which material has highest solar cell efficiency?

Copper indium gallium selenide (CIGS) is a direct band gap material. It has the highest efficiency (~20%) among all commercially significant thin film materials (see CIGS solar cell).

Why GaAs is not used in solar cell?

Disadvantage of GaAs solar cells

Due to its superior performance under relatively high temperature conditions, GaAs batteries have attracted much attention. Many aerospace machines use solar energy using GaAs materials. … At the same time, the cost of GaAs raw materials is much higher than that of silicon.

Why GaAs is used in LED?

GaAs devices generate less noise than most other types of semiconductor components. This is important in weak-signal amplification. Gallium arsenide is used in the manufacture of light-emitting diode s (LEDs), which are found in optical communications and control systems.

Why is SI used in solar cell?

Pure crystalline silicon is a poor conductor of electricity as it is a semiconductor material at its core. … In a solar cell, the layers are positioned next to each other and that way an electric field is created. When the sunlight hits the solar cell, the energy stimulates electrons that leave holes behind.

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Why is GaAs preferred?

Solar radiation spectrum has maximum intensity for energy value of approximately 1.5 eV. GaAs has band gap of ~1.53 eV but has very large absorbing capacity hence they are preferred. …

Why silicon is preferred over germanium in solar cell?

The structure of Germanium crystals will be destroyed at higher temperature. However, Silicon crystals are not easily damaged by excess heat. Peak Inverse Voltage ratings of Silicon diodes are greater than Germanium diodes. Si is less expensive due to the greater abundance of element.

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