Pure Si at 500K has equal number ofelectron (ne) and hole (nh) concent...
or ne = 5 × 109
Given nh = 4.5 × 1022
⇒nh >> ne
∴ Semiconductor is p-type and
ne = 5 × 109 m–3.
View all questions of this testPure Si at 500K has equal number ofelectron (ne) and hole (nh) concent...
× 10^16/cm^3. The intrinsic carrier concentration (ni) of Si at 500K is 1.45 × 10^10/cm^3.
To calculate the doping concentration, we need to use the formula:
n = ni^2 / Nd
where n is the electron concentration, ni is the intrinsic carrier concentration, and Nd is the donor concentration.
Since we are given the electron and hole concentrations, we can assume that the material is doped with a donor impurity. Therefore, we can use the electron concentration as the donor concentration.
Substituting the values, we get:
Nd = ni^2 / n
Nd = (1.45 × 10^10/cm^3)^2 / 1.5 × 10^16/cm^3
Nd = 1.41 × 10^6/cm^3
Therefore, the doping concentration of the Si material is 1.41 × 10^6/cm^3.