How many electron-hole pairs are produced in one second

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Reference no: EM13271129

A 2.11-cm2 wafer of pure silicon is irradiated with electromagnetic radiation having a wavelength of 775 nm. The intensity of the radiation is 4.16 W/m2 and every photon that strikes the sample is absorbed and creates an electron-hole pair.

(a) How many electron-hole pairs are produced in one second?

s?1

(b) If the number of electron-hole pairs in the sample is 6.25 multiply.gif 1011 in the steady state, at what rate do the electron-hole pairs recombine?

s?1

mJ/s

Reference no: EM13271129

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