Physics - Semiconductors Question with Solution | TestHub

In a semiconductor, the number density of intrinsic charge carriers at$27°\mathrm{C}$is$1.5\times {10}^{16} {\mathrm{m}}^{-3}$. If the semiconductor is doped with an impurity atom, the hole density increases to$4.5\times {10}^{22} {\mathrm{m}}^{-3}$. The electron density in the doped semiconductor is _______$\times {10}^9 {\mathrm{m}}^{-3}$