Compared to Silicon, GaAs Semi-conductors offer advantage of

Explanation:

GaAs Semiconductors Compared to Silicon

Definition: Gallium Arsenide (GaAs) is a compound semiconductor composed of gallium (Ga) and arsenic (As). It is widely used in high-frequency and optoelectronic applications due to its superior electrical and physical properties compared to silicon (Si), which is the most commonly used semiconductor material.

Correct Option Analysis:

The correct option is:

Option 4: All of the above

This option is correct because GaAs semiconductors offer all the advantages mentioned in the other options, namely:

• Higher Electron Mobility: GaAs has significantly higher electron mobility compared to silicon. Electron mobility is a measure of how quickly electrons can move through a material when subjected to an electric field. In GaAs, electrons can move more freely, resulting in faster signal transmission and better performance in high-speed electronic devices.
• Higher Frequency Operation: Due to its higher electron mobility, GaAs is capable of operating at higher frequencies than silicon. This property makes it ideal for applications in radio frequency (RF) and microwave technologies, such as mobile phones, satellite communications, and radar systems.
• Lower Leakage Current: GaAs has a wider bandgap than silicon, which reduces the leakage current in electronic devices. Lower leakage current improves the efficiency and reliability of GaAs-based components, especially in high-temperature and high-power applications.

Since all the advantages are valid, the correct answer is "All of the above."