What Are P-Type Semiconductors?
Doping a donor impurity into a semiconductor yields an N-type semiconductor; doping an acceptor impurity into a semiconductor yields a P-type semiconductor. Products made of P-type semiconductors or N-type semiconductors include resistors such as thermistors and varistor. A single-junction semiconductor element composed of a P-type and an N-type semiconductor is most commonly a diode; in addition, a FET is also a single-junction element.
P-type and N-type semiconductors
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- Chinese name
- P-type and N-type semiconductors
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- Types of
- semiconductor
- Details
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- Doping a donor impurity into a semiconductor yields an N-type semiconductor; doping an acceptor impurity into a semiconductor yields a P-type semiconductor. Products made of P-type semiconductors or N-type semiconductors include resistors such as thermistors and varistor. A single-junction semiconductor element composed of a P-type and an N-type semiconductor is most commonly a diode; in addition, a FET is also a single-junction element.
- P-type semiconductor
- If the impurity is an element in Group III of the periodic table-the acceptor impurity, such as boron or indium, their valence electron bands have only three electrons, and the minimum energy level of their conduction band is lower than that of Group IV Conduction electron energy level. As a result, electrons can more easily transition from the valence band of germanium or silicon to the conduction band of boron or indium. In the process, a positive ion is generated due to the loss of electrons, because this is a "vacancy" for other electrons, so it is usually called a "hole", and this material is called a "P" type semiconductor . Conduction in such materials is mainly caused by positively charged holes, so in this case the electrons are "minority carriers". As shown in Figure 1.