The world energy crisis, as well as global warming, has intensified an urgent need for renewable energies. Solar radiation can be converted to electricity by solar cells readily; however, the high cost of photovoltaic systems has hindered its worldwide commercialization. Also, the solar cells cannot be integrated directly to skyscrapers. Therefore, luminescent solar concentrators have been developed. Here, we have proposed a novel and exciting structure for LSCs based on four different groups of QDs (generally superposition of QDs) with different sizes and materials to absorb photons from sunlight ranging from ultraviolet to near-infrared and then guide re-emitted photons to edge of LSC, which culminate in capturing photons by solar cells. We designed the QDs such that the absorption and emission spectra have minimum overlap leading to limited reabsorption losses. A Monte-Carlo ray-tracing simulation has been developed to model and evaluates the effectiveness of the proposed device. Then, we have optimized the QD’s concentration and LSC geometry to achieve maximum optical efficiency. For different quantum yields ranging from 0.4 to 1, we have obtained theoretically super high optical efficiency of 11–31%. The optimization results show a 67.8% enhancement in optical flux gain leading to 3.72-times more concentrated photon flux demonstrating our device’s commercialization potential. Besides, total absorbed photons, transparency, and ultimate fate of all photons were calculated. Finally, the proposed idea can be used to introduce a high-efficiency solar concentrator while extending the coverage of solar cells to make green energy.

中文翻译：

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使用叠加胶体量子点的超高效率发光太阳能聚光器

世界能源危机以及全球变暖加剧了对可再生能源的迫切需求。太阳辐射可以很容易地通过太阳能电池转化为电能；然而，光伏系统的高成本阻碍了其在全球范围内的商业化。此外，太阳能电池不能直接集成到摩天大楼中。因此，已经开发了发光太阳能聚光器。在这里，我们为 LSC 提出了一种新颖且令人兴奋的结构，基于四组不同尺寸和材料的 QD（通常是 QD 的叠加），以吸收从紫外线到近红外范围内的太阳光中的光子，然后将重新发射的光子引导到LSC 的边缘，最终通过太阳能电池捕获光子。我们设计的 QD 使得吸收和发射光谱具有最小的重叠，从而导致有限的重吸收损失。已经开发了蒙特卡罗光线追踪模拟来建模和评估所提出设备的有效性。然后，我们优化了 QD 的浓度和 LSC 几何形状，以实现最大的光学效率。对于从 0.4 到 1 的不同量子产率，我们获得了理论上 11-31% 的超高光学效率。优化结果显示光通量增益提高了 67.8%，导致集中光子通量增加了 3.72 倍，证明了我们设备的商业化潜力。此外，还计算了所有光子的总吸收光子、透明度和最终归宿。最后，