Tag: Band Gap
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Conduction Band
Introduction to Energy Bands In solids, electrons are not associated with individual atoms, but are spread throughout the material. Because of the close proximity of the atoms, the atomic energy levels overlap, forming continuous energy bands. The electron energy in solids is therefore not discrete, but rather exists within these energy bands. The conduction band…
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Valence Band
Introduction In the realm of solid-state physics, understanding electronic band structure is essential for appreciating the electrical, optical, and thermal properties of materials. Among various energy bands, the valence band holds a pivotal position. It helps in explaining numerous phenomena, such as electrical conductivity, superconductivity, and optical absorption. Energy Bands in Solids In an isolated…
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Intrinsic Semiconductors
Introduction Intrinsic semiconductors, sometimes referred to as pure semiconductors, are materials that are not doped by impurities and consist only of one type of atom. They represent an essential class of materials that have revolutionized the world of electronics and underpin the operation of devices such as transistors, diodes, and solar cells. Basic Concept: Band…