Why is GaAs preferred material for making solar cells?

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 is GaAs preferred material for 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.

Why is GaAs not used for solar cells?

GaAs has good heat resistant properties, as GaAs devices are comparatively insensitive to overheating, due to their wider energy band gap, and they tend to create much less noise (which is the disturbance in the electrical signal) in electronic circuits than silicon devices as well, particularly at higher frequencies.

Why silicon and gallium arsenide is used for making solar cell?

The energy of the maximum intensity of the solar radiation is nearly 1.5eV. … 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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Why do semiconductors like Si and GaAs preferred material for solar cells?

(ii) The energy for the maximum intensity of the solar radiation is nearly equals to 1.5 eV. … semiconductors with band gaps close to 1.5 eV are ideal materials for the fabrication of solar cells. Since Si and GaAs have band gaps of 1.1 eV and 1.53 eV, they are preferred for making solar cells.

Why is Sillicone Si used abundantly in photovoltaic cell construction?

For the application of a material in solar cells, the band gap of that material should be close to the maxima of solar spectrum which is around 1.5 eV. Since silicon band gap is much closure than Germanium, silicon is widely used. GaAs is very costly hence can not be used for mass scale production.

Which material is ideal for solar cell fabrication and why?

Note: The material selected is crystalline silicon because of the favorable band gap and also the high absorption of the material for incident light.

What are the advantages of GaAs technology?

Benefits or advantages of GaAs

➨GaAs cells are relatively insensitive to heat compare to silicon cells. Hence it offers high thermal stability. ➨It has lower noise. ➨It operates over wide temperature range.

Why do we prefer GaAs for laser diodes?

GaAs advantages

It has a higher saturated electron velocity and higher electron mobility, allowing gallium arsenide transistors to function at frequencies in excess of 250 GHz.

How does a GaAs solar cell work?

The base function of the GaAs solar cell is to convert the radiant light energy of the sun into electricity.

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Why GaAs is most commonly used?

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. This is the reason why the gallium arsenide has not been used in the production of a solar cell.

Which semiconductor material is mostly used for solar cell?

Silicon. Silicon is, by far, the most common semiconductor material used in solar cells, representing approximately 95% of the modules sold today. It is also the second most abundant material on Earth (after oxygen) and the most common semiconductor used in computer chips.

Which of the following should not be the characteristic of the solar cell material?

9. Which of the following should not be the characteristic of the solar cell material? Explanation: The Energy Band of the semiconductor should not be too high. It should be around 1.5 eV so that the incident solar radiation can cause the generation of e-h pairs.