The energy gap of germanium is 0.68 eV. The electron mobility is 0.364 m²/volts.sec and the hole mobility is 0.190 m²/volts.sec. The intrinsic hole concentration at room temperature (300 K) is X.Y x 1019 m-3. (a) Calculate the electrical conductivity of germanium (intrinsic) at room temperature. (b) What temperature increase (relative to room temperature) is necessary to increase its conductivity by 50%? XY is the first 2 digits of your student ID number. For instance, if your student number is 2345678, take hole concentration as 2.3 x 1019 m-3 Data: σ =nqu, σ = σ0 exp (-Eg/2kT), q=1.6x10-19 Coulomb, k = 8.62x10-5 eV/K

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter22: Inorganic Materials
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The energy gap of germanium is 0.68 eV. The electron mobility is 0.364 m²/volts.sec and the hole mobility is
0.190 m²/volts.sec. The intrinsic hole concentration at room temperature (300 K) is X.Y x 1019 m-3.
(a) Calculate the electrical conductivity of germanium (intrinsic) at room temperature.
(b) What temperature increase (relative to room temperature) is necessary to increase its conductivity by
50%?
XY is the first 2 digits of your student ID number. For instance, if your student number is 2345678, take hole
concentration as 2.3 x 1019 m-3
Data: σ =nqu, σ = σ0 exp (-Eg/2kT),
q=1.6x10-19 Coulomb, k = 8.62x10-5 eV/K
Transcribed Image Text:The energy gap of germanium is 0.68 eV. The electron mobility is 0.364 m²/volts.sec and the hole mobility is 0.190 m²/volts.sec. The intrinsic hole concentration at room temperature (300 K) is X.Y x 1019 m-3. (a) Calculate the electrical conductivity of germanium (intrinsic) at room temperature. (b) What temperature increase (relative to room temperature) is necessary to increase its conductivity by 50%? XY is the first 2 digits of your student ID number. For instance, if your student number is 2345678, take hole concentration as 2.3 x 1019 m-3 Data: σ =nqu, σ = σ0 exp (-Eg/2kT), q=1.6x10-19 Coulomb, k = 8.62x10-5 eV/K
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