Semiconductor Physics | GATE Notes & Videos for Electrical Engineering - Electrical Engineering (EE) PDF Download

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FAQs on Semiconductor Physics - GATE Notes & Videos for Electrical Engineering - Electrical Engineering (EE)

1. What is semiconductor physics?
Ans. Semiconductor physics is a branch of physics that focuses on the study of materials known as semiconductors, which have electrical conductivity between that of conductors and insulators. It deals with the behavior and properties of electrons, holes, and the movement of charge carriers in semiconductors.
2. How do semiconductors work?
Ans. Semiconductors work by utilizing the unique properties of their atoms and electron behavior. When certain impurities are added to a semiconductor material, it creates either excess electrons (n-type) or holes (p-type). The movement of these charge carriers determines the conductivity and functionality of semiconductor devices.
3. What are the applications of semiconductor physics?
Ans. Semiconductor physics has numerous applications, including the development of electronic devices such as transistors, diodes, integrated circuits, and solar cells. It is also crucial for the advancement of technologies like telecommunications, computer systems, optoelectronics, and renewable energy.
4. What is the role of doping in semiconductors?
Ans. Doping is the process of intentionally introducing impurities into a semiconductor to modify its electrical properties. By adding impurities with extra electrons (n-type doping) or holes (p-type doping), the conductivity and behavior of the semiconductor can be controlled. Doping allows the creation of different types of semiconductors and enables the development of various electronic devices.
5. How do semiconductors contribute to the field of renewable energy?
Ans. Semiconductors play a vital role in renewable energy technologies, particularly in solar cells. Solar cells are made of semiconductor materials that convert sunlight into electricity through the photovoltaic effect. The ability of semiconductors to absorb photons and create electron-hole pairs makes them essential for harnessing solar energy and generating clean electricity.
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