Please provide Handwritten answer 7.7 The measured thermal conductivity of germanium at 300°K is0.63 W/°K, in a range where acoustic phonon scattering dominates.(a) What fraction of this thermal conductivity is caused by free electronsif the free-electron density is 101" cm-³ and the electron mobility is 4x 10cm2/V-sec?(b) What must the concentration of free electrons in germanium at 300°Kbe in order for the electronic contribution to the thermal conductivity to beequal to the lattice contribution?(c) The thermoelectric power corresponding te (a) is measured to be0.46 mV/°K. How far below the conduction-band edge does the Fermilevel lie?

Given Data The thermal conductivity of the germanium is:K=0.63 W/K The temperature is:T=300°K The…

7.7 The measured thermal conductivity of germanium at 300°K is 0.63 W/ºK, in a range where acoustic phonon scattering dominates. (a) What fraction of this thermal conductivity is caused by free electrons if the free-electron density is 101¹7 cm-3 and the electron mobility is 4 × 10³ cm²/V-sec? (b) What must the concentration of free electrons in germanium at 300°K be in order for the electronic contribution to the thermal conductivity to be equal to the lattice contribution? (c) The thermoelectric power

7.7 The measured thermal conductivity of germanium at 300°K is 0.63 W/ºK, in a range where acoustic phonon scattering dominates. (a) What fraction of this thermal conductivity is caused by free electrons if the free-electron density is 101¹7 cm-3 and the electron mobility is 4 × 10³ cm²/V-sec? (b) What must the concentration of free electrons in germanium at 300°K be in order for the electronic contribution to the thermal conductivity to be equal to the lattice contribution? (c) The thermoelectric power

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.5P: To determine the thermal conductivity of a structural material, a large 15-cm-thick slab of the...

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