A block of Silicon is doped with a donor atom density ND = 3 × 1014 atoms/cm3 and with an acceptor density of NA = 0.5 × 1014 atoms/cm3. Find the resultant density of electrons.
1
4.5 × 1014 electrons/cm3
2
3.5 × 1014 electrons/cm3
3
2.5 × 1014 electrons/cm3
4
5.5 × 1014 electrons/cm3