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相关概念视频

Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

292
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
292
Types of Semiconductors01:20

Types of Semiconductors

525
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
525

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半导体纳米材料用于光电子应用.

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纳米技术在各种领域提供先进的解决方案. 纳米材料和纳米设备的持续研究有望进一步创新和应用开发.

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