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Introduction Semiconductors are the foundation of modern electronics. Every electronic device, such as smartphones, computers, televisions, LED lights, solar panels, and integrated circuits, uses semiconductor materials. The most commonly used semiconductor materials are Silicon (Si) and Germanium (Ge). Their electrical conductivity lies between conductors and insulators. Semiconductors are broadly classified into: The electrical conductivity of […]

Introduction All materials around us are made up of atoms, but not all materials conduct electricity in the same way. Some materials, like copper, allow electric current to flow easily, while others, like rubber and glass, do not. Between these two extremes are materials such as silicon and germanium, which conduct electricity under certain conditions. […]

Introduction To understand the electrical properties of materials such as conductors, semiconductors, and insulators, it is essential to understand the concept of energy bands. In an isolated atom, electrons revolve around the nucleus in fixed energy levels. However, when millions of atoms come together to form a solid, these energy levels split into a large […]