论文标题
光子型发光太阳能集中器的热力学极限
Thermodynamic Limits of Photon-Multiplier Luminescent Solar Concentrators
论文作者
论文摘要
在理论上，发光太阳集合器（LSC）能够以极高的效率浓缩直接和扩散的太阳辐射。光子 - 型发光太阳浓缩器（PM-LSC）包含超过100 \％光致发光量子效率的发色团。 PM-LSC最近已被实验证明，并有望胜任传统LSC。但是，我们发现PM-LSC的热力学极限不同，有时相对于传统LSC而言更为极端。可以预见的是，要获得很高的浓度因子，PM-LSC设计还必须包括自由能量变化，类似于传统LSC的Stokes变化。值得注意的是，与LSC不同，PM-LSC的最大浓度比取决于入射光子场的亮度。对于某些亮度，但同等的能量损失，PM-LSC的最大浓度因子比传统LSC的最大浓度因子更高。我们发现，实现高度集中PMSC的热力学要求与传统LSC不同。新模型可深入了解PM-LSC浓度的限制，可用于提取设计规则以进行进一步的PM-LSC设计。
Luminescent solar concentrators (LSCs) are theoretically able to concentrate both direct and diffuse solar radiation with extremely high efficiencies. Photon-multiplier luminescent solar concentrators (PM-LSCs) contain chromophores which exceed 100\% photoluminescence quantum efficiency. PM-LSCs have recently been experimentally demonstrated and hold promise to outcompete traditional LSCs. However, we find that the thermodynamic limits of PM-LSCs are different and are sometimes more extreme relative to traditional LSCs. As might be expected, to achieve very high concentration factors a PM-LSC design must also include a free energy change, analogous to the Stokes shift in traditional LSCs. Notably, unlike LSCs, the maximum concentration ratio of a PM-LSC is dependent on brightness of the incident photon field. For some brightnesses, but equivalent energy loss, the PM-LSC has a greater maximum concentration factor than that of the traditional LSC. We find that the thermodynamic requirements to achieve highly concentrating PM-LSCs differ from traditional LSCs. The new model gives insight into the limits of concentration of PM-LSCs and may be used to extract design rules for further PM-LSC design.
