Before revision: On the other hand, for an indirect band gap, the formula is: where: is the energy of the phonon that assists in the transition is Boltzmann's constant is the thermodynamic temperature This formula involves the same approximations mentioned above.
After revision: On the other hand, for an indirect band gap, the formula is: where: is the energy of the phonon that assists in the transition is Boltzmann's constant is the thermodynamic temperature This formula involves the same approximations mentioned