Which of the following does not function as a donor atom?
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Answer: D. Aluminum
Explanation
Aluminum acts as a trivalent acceptor impurity in silicon semiconductors rather than a donor atom. Group thirteen elements like aluminum create electron holes when doped into silicon crystal lattices. This makes aluminum a p type dopant instead of an n type donor semiconductor material. Semiconductor physics uses doping to alter the electrical conductivity of pure silicon materials. Donor atoms from group fifteen possess five valence electrons, providing extra electrons for conduction. Acceptor atoms from group thirteen possess three valence electrons, creating electron deficiencies or holes.
Microchip manufacturers combine p-type and n-type semiconductors to create diodes and transistors. Understanding semiconductor doping principles is essential for designing modern electronic integrated circuits. Solid state physics underpins all contemporary computing and telecommunications technology infrastructure. Phosphorus is a group fifteen donor atom that contributes free electrons to silicon lattices. Antimony acts as an n-type donor impurity used in semiconductor manufacturing processes. Arsenic is a standard group fifteen donor element that provides extra conduction electrons.
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- Everyday Science
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- Everyday Science
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