electron concentration in n-type region in(in 10E18 cm^-3)

To determine the electron concentration in an n-type region, you need to have some information about the material and the doping level.

Typically, the electron concentration in an n-type region can be calculated using the equation:

n = Nd - Na

Here,
- "n" represents the electron concentration in the region (in 1018 cm-3 units).
- "Nd" is the doping concentration of the donor impurity atoms (in 1018 cm-3 units).
- "Na" is the concentration of acceptor impurity atoms (in 1018 cm-3 units). In n-type regions, the acceptor impurity concentration is usually negligible.

To calculate the electron concentration, you need to know the doping concentration value.

Please provide the doping concentration value (Nd) in order to calculate the electron concentration accurately.