“…At room and higher temperatures, the electron-phonon interactions and scattering by optical phonons play a dominant role effecting various properties of polar semiconductor quantum heterostructures, including hot-electron relaxation rates, interband transition rates, room-temperature exciton lifetimes, and many other optical and transport properties [23,24]. Moreover, since nitride material usually crystallizes in the anisotropic hexagonal wurtzite structure, the crystal dynamical properties of nitride SLs are more complex due to anisotropy of the crystal structure in contrast to those of cubic crystals [25][26][27][28][29][30][31][32]. Hence, it is necessary and important to investigate the polar optical phonon modes in wurtzite GaN-based SL with complex bases.…”