Temperature Dependence Analysis of Intersubband Absorption in Asymmetric ZnO/MgZnO Quantum Wells: Potential for Terahertz Emission Applications

In this paper, in quantum well structures, with of Mg, we have calculated the electronic states of confined levels and the intersubband absorption coefficient with or without the effect of non-parabolicity. We use the finite difference approach to do our computations inside the envelope function formalism approximation. The results show that the wavelength range covered by the transition (9—16 μm) is mid-infrared to far-infrared. According to our findings, quantum well structures, which have extremely similar lattice characteristics and the benefit of an unconstrained structure, have transition energies that provide terahertz frequencies () that are utilized in airport security and explosives detection. This promotes intersubband photonic structure design and epitaxial development. Furthermore, we have examined the impact of temperature on the Fermi level and the load carrier population inside each level for these remarkable structures. In addition, each transition's oscillation force and intersubband absorption are considered.