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Q1 Calculate the shortest wavelength for electron revolving in the fourth excited germanium atom, drops into second excited state and then to first state, if the nucleus charge is 4.8 * 10 19 C?

Q1 Calculate the shortest wavelength for electron revolving in the fourth excited germanium atom, drops into second excited state and then to first state, if the nucleus charge is 4.8 * 10 19 C?

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Q1 Calculate the shortest wavelength for electron revolving in the fourth excited germanium atom, drops into second excited state and then to first state, if the nucleus charge is 4.8 * 10 -19 C? Q2 A p-n junction has electron mobility 0.13 m?vs , thermal velocity is 30mV, the doping concentration in the p-side is (102 m3 and 1027 m3), life time for holes = 10 us, and hole diffusion length is 1.5 * 10-4 m, calculate the total conductivity in p-region?
Transcribed Image Text:Q1 Calculate the shortest wavelength for electron revolving in the fourth excited germanium atom, drops into second excited state and then to first state, if the nucleus charge is 4.8 * 10 -19 C? Q2 A p-n junction has electron mobility 0.13 m?vs , thermal velocity is 30mV, the doping concentration in the p-side is (102 m3 and 1027 m3), life time for holes = 10 us, and hole diffusion length is 1.5 * 10-4 m, calculate the total conductivity in p-region?
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