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Luminescence studies on nitride quaternary alloys double quantum wells

机译：氮化物四元合金双量子阱的发光研究

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We present theoretical photoluminescence (PL) spectra of undoped and p-doped Al_xIn_(1-x-y)Ga_yN/ Al_xIn_(1-X-Y)Ga_YN double quantum wells (DQWs). The calculations were performed within the k.p method by means of solving a full eight-band Kane Hamiltonian together with the Poisson equation in a plane wave representation, including exchange-correlation effects within the local density approximation. Strain effects due to the lattice mismatch are also taken into account. We show the calculated PL spectra, analyzing the blue and red-shifts in energy as one varies the spike and the well widths, as well as the acceptor doping concentration. We found a transition between a regime of isolated quantum wells and that of interacting DQWs. Since there are few studies of optical properties of quantum wells based on nitride quaternary alloys, the results reported here will provide guidelines for the interpretation of forthcoming experiments.
机译：我们提出了未掺杂和p掺杂的Al_xIn_（1-x-y）Ga_yN / Al_xIn_（1-X-Y）Ga_YN双量子阱（DQWs）的理论光致发光（PL）光谱。通过在平面波表示中求解完整的八波段Kane Hamiltonian方程和Poisson方程，在k.p方法内进行计算，包括局部密度近似内的交换相关效应。还考虑了由于晶格失配引起的应变效应。我们展示了计算出的PL光谱，分析了能量的蓝移和红移，因为它们改变了尖峰和阱宽度以及受体掺杂浓度。我们发现了孤立的量子阱和相互作用的DQW之间的过渡。由于对基于氮化物四元合金的量子阱的光学性质的研究很少，因此这里报道的结果将为解释即将进行的实验提供指导。

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