What is the change inconductivity upon shining light

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Reference no: EM13290605

A Si sample with 10^16/cm^3 donors is optically excited such that10^19/cm^3 electron-hole pairs are generated per second uniformlyin the sample. the laser causes the sample to heat up to 450K. find the quasi-fermi levels and the change in conductivity of the sampleupon shining the light. electron and hole life times are both 10us. Dp(diffusivity of holes)= 12cm^2/s Dn(diffusivity ofelectrons)= 36cm^2/s ni=10^14 cm^-3 at 450K. what is the change inconductivity upon shining light.

Reference no: EM13290605

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