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Unformatted text preview: D D kT eD n ion ion = e=1.602x10-19 C/atom R=8.314 J/molK k=1.38x10-23 J/atomK 2. Indicate whether the following statements are TRUE or FALSE -Electrical conductivity of extrinsic semiconductors increases continuously with temperature because concentration of both mobile electrons and holes also increases with temperature. TRUE / FALSE -In both good electronic conductors and semiconductors, electrical conductivity increases with amount of impurities. TRUE / FALSE -Increasing the number of crystalline defects in metals causes decrease in electrical conductivity since they serve as scattering centers for conduction electrons. TRUE / FALSE 3. Which of the curves belongs to the extrinsic semiconductor? a) Curve 1 b) Curve 2 c) Both 4. 1 point + 0.5 for unit 1 point + 0.5 for unit 1 point 1 point 1 point 1 point 1 oint 1 2 2 oints...
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This note was uploaded on 01/05/2010 for the course MEEN 222 taught by Professor Radovic during the Fall '08 term at Texas A&M.
- Fall '08