Abstract

The conversion efficiency (CE) of core–shell quantum dot (CSQD) solar cell is investigated within weak and strong confinements strength, using detailed balance model. The weak and strong confinement strength is modeled using ZnTe/ZnSe and PbS/CdS CSQD, respectively. Considering size-dependent strain, the results of CE of CSQD solar cell for varying core radius is plotted with and without considering multiple exciton generation (MEG), and the results show the improvement in CE with MEG, thus indicating its importance in the low-dimensional system. The numerical results demonstrate that for the same CSQD size, the solar cell with a stronger confinement strength achieves the higher CE in comparison to the weaker confinement. Also, the MEG significantly increases the CE of stronger confined CSQD solar cell. The results plotted are in good agreement with the literature.

中文翻译：

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约束强度对应变核-壳量子点太阳能电池转换效率的影响

摘要

使用详细的平衡模型，研究了在弱约束强度和强约束强度下的核-壳量子点（CSQD）太阳能电池的转换效率（CE）。分别使用ZnTe / ZnSe和PbS / CdS CSQD对弱和强约束强度进行建模。考虑到尺寸依赖性应变，绘制了CSQD太阳能电池在不考虑多重激子产生（MEG）的情况下改变芯半径的CE结果，结果表明，使用MEG可以改善CE，从而表明其在低磁导率下的重要性。尺寸系统。数值结果表明，对于相同的CSQD尺寸，与较弱的约束相比，具有更强约束强度的太阳能电池可获得更高的CE。同样，MEG显着提高了更坚固的封闭CSQD太阳能电池的CE。