Calculate the Bohr radius of an exciton in GaAs in units of the lattice constant. Calculate the exciton binding energy of an exciton in GaAs.
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85 \times 10^{-12} \, \text{C}^2/\text{N}\cdot\text{m}^2$ - $\hbar = 1.05 \times 10^{-34} \, \text{J}\cdot\text{s}$ - $m_e = 9.1 \times 10^{-31} \, \text{kg}$ - $e = 1.6 \times 10^{-19} \, \text{C}$ The Bohr radius formula is: $$a_0 = Show more…
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