Exciton binding energy, optical transition energy, emission wavelength and electrostatic built-in internal fields are studied with the various magnesium alloy compositions and the dot radii in ZnO/Zn_1−xMg_xO cylindrical quantum dot. The induced built-in internal electric fields are found to be around the order of MV/cm and the obtained values range from 0.41 to 1.5 MV/cm. The obtained values of internal fields are used to find the optical gain and it is found to be larger than GaN materials. The effects of adding Mg composition, the built-in internal fields and the spatial confinement have great influence on the exciton states.

中文翻译：

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极性量子点中光学增益上的感应静电场

利用各种镁合金成分和ZnO / Zn _1-x Mg _x O圆柱量子点中的点半径研究了激子结合能，光学跃迁能，发射波长和静电内在场。发现感应的内置内部电场约为MV / cm，获得的值范围为0.41至1.5 MV / cm。所获得的内部场的值用于找到光学增益，并且发现它比GaN材料大。镁的添加，内部场的建立和空间限制对激子态的影响很大。