In this work, we investigated the effects of polarizations and structural parameters on the optical absorption coefficient (OAC) and the intersubband transition between the three lowest energy levels E₁,E₂$E_1\text{,}{E}_2$ , and E₃$E_3$ in the Mg_xZn_(1-x)O/ZnO single quantum well. The energy of the electron in each level and its respective wavefunction are calculated by the numerical solution of Schrödinger and Poisson equations self-consistently using an effective mass approximation. Our findings exhibit that the intersubband transitions, ΔE₁₂$\mathrm{\Delta }{E}_{12}$ and ΔE₁₃$\mathrm{\Delta }{E}_{13}$ , can be altered and controlled by varying the quantum well width and the magnesium composition, x . Moreover, our results suggest that the optical absorption coefficients, α₁₂${\alpha }_{12}$ and α₁₃${\alpha }_{13}$ , can be modulated principally by adjusting the quantum well width, especially the optical absorption coefficient (α₁₂${\alpha }_{12}$), which presents a red shift by raising the quantum well thickness. Contrary to α₁₂${\alpha }_{12}$ , the optical absorption coefficient, α₁₃${\alpha }_{13}$ , can present either a red or a blue shift by increasing the quantum well width. The process responsible for this behavior, which can be suitable for optoelectronic device applications, is discussed here in detail.

在这项工作中，我们研究了偏振和结构参数对光吸收系数（OAC）和三个最低能级E ₁，E ₂之间的子带间跃迁的影响$E_{\mathrm{1个}}\text{，}{E}_{\mathrm{2个}}$和E ₃$E_3$在Mg _x Zn _{（1- x）} O / ZnO单量子阱中。使用有效质量近似，通过自洽的Schrödinger和Poisson方程的数值解来计算每个能级中的电子能量及其相应的波函数。我们的研究结果显示，该间跃迁，ΔE ₁₂$\mathrm{\Delta }{E}_{12}$和ΔE ₁₃$\mathrm{\Delta }{E}_{13}$可以通过改变量子阱宽度和镁成分x来改变和控制。此外，我们的结果表明，光学吸收系数，α ₁₂${\alpha }_{12}$和α ₁₃${\alpha }_{13}$可以主要通过调节量子阱宽度，尤其是光的吸收系数（被调制α ₁₂${\alpha }_{12}$），通过增加量子阱的厚度呈现红移。相反，α ₁₂${\alpha }_{12}$，光吸收系数，α ₁₃${\alpha }_{13}$可以通过增加量子阱宽度来呈现红色或蓝色偏移。这里详细讨论了负责此行为的过程，该过程可能适用于光电设备应用。