Answer:
[tex]10^{20}\frac{cm^{-3}}{sec}[/tex]
Explanation:
The recombination rate is denoted by R it is the ratio of excess carrier concentration and life time
The recombination rate R is given by [tex]R=\frac{\Delta n}{\tau _n}[/tex]
We have given excess carrier concentration = [tex]10^{14}cm^-3[/tex]
Life time [tex]\tau _n=10^{-6}sec[/tex]
So recombination rate [tex]R=\frac{\Delta n}{\tau _n}=\frac{10^{14}}{10^{-6}}=10^{20}\frac{cm^{-3}}{sec}[/tex]
