ABSTRACT
It is interesting to predict charge-carrier mobility dependence on the electron–phonon coupling constant although different authors have different relations. The mobility assists in the design of new technological devices, many of which are made of polar and ionic solids and include: battery anodes made of oxides, transparent conductors serving as electronic displays, chalcogenides and halides serving as light emission in displays and lighting, and absorption in photovoltaic solar cells. It is observed that small distortions in the lattice results in the quasi-particle, the so-called phonon with the electron-phonon coupling giving birth to polaronic processes provoking scattering mechanisms by which momentum or kinetic energy of an electron is dissipated. Interestingly, since, for different approaches, the scattering process is presented differently, then consequently the people are supposed to have different results. Generally, it is assumed that the Boltzmann equation holds only at low temperatures and for weak coupling to phonons.
