圆柱棒阵列分层系统的电子和空穴谱：太阳电池应用
Electronic and hole spectra of layered systems of cylindrical rod arrays: solar cell application
摘要：
我们已经计算了电子和空穴光谱的3D超晶格层的GaAs棒的有限高度排列在一个六角晶格和嵌入在AlGaAs矩阵，交替均匀的AlAs间隔层组成。在包络函数近似下，考虑了轻空穴和重空穴子带以及空穴自旋简并度，计算了能谱。厚间隔物的应用允许研究圆柱形棒的隔离层的能带结构。我们估计的最终效率的太阳能转换的太阳能电池的基础上的阵列的圆柱形量子点与点的高度，并确定该参数的最佳值。
英文摘要：
We have computed the electronic and hole spectra of a 3D superlattice consisting of layers of GaAs rods of finite height arranged in a hexagonal lattice and embedded in an AlGaAs matrix, alternating with spacer layers of homogeneous AlAs. The spectra are calculated in the envelope function approximation, with both light-hole and heavy-hole subbands and hole spin degeneracy taken into account. The application of thick spacers allows to investigate the band structure of isolated layers of cylindrical rods. We estimate the ultimate efficiency of solar energy conversion in a solar cell based on an array of cylindrical quantum dots versus the dot height, and determine the optimal value of this parameter.
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