Assertion: atom's electron | /r/HasProperty | excited
Facets:
value: from the filled valence band
type: OTHER
Source sentences:
text: Similarly, doping silicon with a group 13 element such as boron, aluminium, or gallium results in the introduction of acceptor levels that trap electrons that may be excited from the filled valence band, creating a p-type semiconductor.
text: Indeed, even if the photoelectric effect is the favoured reaction for a particular single-photon bound-electron interaction, the result is also subject to statistical processes and is not guaranteed, even if the photon has certainly disappeared and a bound electron has been excited (usually K or L shell electrons at gamma ray energies).