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Question: help with semiconductor...

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6) Determine the number of energy states per cubic cm in (a) Silicon between Ec and Ec 0.56 eV at T- 300K (b) GaAs between Ec and Ec 0.65 eV at T-300K Note: the effective mass of an electron in Silicon is 1.08 times its normal mass; the effective mass of an electron in GaAs is 0.067 times its normal mass. Your final answer will be in cubic meters so you will need to multiply by 10-6 to convert to cubic centimeters. Hint: solve the integral for the general case of states between Ec and Ec +x and then substitute the values in the problem for x after you have completed the integration. help with semiconductor!!

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