2. Assuming the lattice constant varies linearly with composition x for a ternary alloy, (a) What...
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2. Assuming the lattice constant varies linearly with composition x for a ternary alloy, (a) What composition of InxGaxAs is lattice-matched to InP ? (find x approximately) [10 pt] (b) What is the band gap energy in this case ? (find the value approximately) [10 pt] 3. Using Heisenberg's uncertainty principle, estimate the momentum uncertainty of a bound electron within an atom of diameter 18 fm. Use this calculated momentum uncertainty to find the minimum binding energy. [15 pt] Band Gap (EV) 23 2.0 15 1.0 05 Gal ● SI GRAS GaAs AIA *-02 Goo Binary substrates Si (1.12 eV, 5.43 A) Ge (0.67 eV, 5.65 A) 114 Inx Ga 1-1 As InP In FLO 5.8 Lattice constant (A) BUK 60 AISH Gasb Ins 62 2. Assuming the lattice constant varies linearly with composition x for a ternary alloy, (a) What composition of InxGaxAs is lattice-matched to InP ? (find x approximately) [10 pt] (b) What is the band gap energy in this case ? (find the value approximately) [10 pt] 3. Using Heisenberg's uncertainty principle, estimate the momentum uncertainty of a bound electron within an atom of diameter 18 fm. Use this calculated momentum uncertainty to find the minimum binding energy. [15 pt] Band Gap (EV) 23 2.0 15 1.0 05 Gal ● SI GRAS GaAs AIA *-02 Goo Binary substrates Si (1.12 eV, 5.43 A) Ge (0.67 eV, 5.65 A) 114 Inx Ga 1-1 As InP In FLO 5.8 Lattice constant (A) BUK 60 AISH Gasb Ins 62
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Related Book For
Essentials of Materials Science and Engineering
ISBN: 978-1111576851
3rd edition
Authors: Donald R. Askeland, Wendelin J. Wright
Posted Date:
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