Assertion: silicon's electron | /r/HasProperty | bound to atomic nuclei of the material
Facets:
value: tightly
type: MANNER
Source sentences:
text: Like other solids, the electrons in semiconductors can have energies only within certain bands (i.e. ranges of energy levels) between the energy of the ground state, corresponding to electrons tightly bound to the atomic nuclei of the material, and the free electron energy, which is the energy required for an electron to escape entirely from the material.