Assertion: impurity's level | /r/HasProperty | around 1021 dopants per cm3 —
Facets:
Source sentences:
text: But researchers have found4 that, as dopant-atom concentrations approach the high levels required for smaller devices — around 1021 dopants per cm3 — the electron concentration in the conduction band does not exceed 6–7 × 1020 electrons per cm3.