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Physics
Atomic and Condensed Matter
Exploring Ionised Atoms, Free Electrons & Energy Levels
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[QUOTE="bob012345, post: 6503739, member: 575631"] [I]I have some confusion about the concept of some electronic bands and energy levels.[/I] You are not the only one. [I]Beyond valance band, in a solid crystal lattice[/I], ? [I]For an atom, can having at least one electron in the conduction band mean that the atom has been ionised?[/I] Yes according to the Wiki articles referenced below but most of my semiconductor books do not use the word [I]ionised[/I] but rather [I]charged[/I] for the Donors and Acceptors. .https://en.wikipedia.org/wiki/Ionization [URL]https://en.wikipedia.org/wiki/Donor_(semiconductors)[/URL] [URL]https://en.wikipedia.org/wiki/Acceptor_(semiconductors)[/URL] [I]Can having an electron in the donor energy level or acceptor energy level mean that the atom has been ionised?[/I] Same answer but the electron is not in the acceptor level, the hole is. [I]Is free electron same as an electron in the conduction band or an electron in the acceptor or donor band?[/I] A free electron is in the conduction band. Acceptor and donor are not energy bands but the type of dopant used to make P-type or N-type semiconductors respectively.[I]Is an atom having a free electron an ionised atom?[/I] Removing an electron from an atom makes the atom ionised if that's what you mean.. [I]I am super-super-confused...[/I] I've been there. [/QUOTE]
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Physics
Atomic and Condensed Matter
Exploring Ionised Atoms, Free Electrons & Energy Levels
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