A sample of semiconductor has a cross-sectional area of 1 cm2 and a thickness of 0.1 cm. Determine the number of electron-hole pairs that are generated per unit volume per unit time by the uniform absorption of 1 watt of light at a wavelength of 6300 Å. Assume each photon creates one electron-hole pair. (b) If the excess minority carrier lifetime is 10 μs, what is the steady-state excess carrier concentration?

0.863333

86%

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