Olson R W, Loring R F, Fayer M D
Appl Opt. 1981 Sep 1;20(17):2934-40. doi: 10.1364/AO.20.002934.
The problem of reabsorption in luminescent solar concentrators (LSC) is discussed. A mathematical development is presented which enables the LSC gain to be calculated based on the optical properties of the materials and a random walk formalism. Two- and three-dimensional analyses are used. A detailed set of calculations for a common dye (rhodamine 6G) is used to examine the practicality of employing a single dye. The effects of diameter, thickness, and quantum yield on the LSC output are presented. The spectrum of the LSC output as a function of concentration is calculated. It is suggested that LSCs can be made more efficient with a system which utilizes radiationless electronic excited state transport and trapping as intermediate steps between absorption and reemission. Trap emission substantially avoids the reabsorption problem.
讨论了发光太阳能聚光器（LSC）中的重吸收问题。给出了一种数学推导，可基于材料的光学性质和随机游走形式来计算LSC增益。采用了二维和三维分析方法。使用一组针对常见染料（罗丹明6G）的详细计算来研究使用单一染料的实用性。给出了直径、厚度和量子产率对LSC输出的影响。计算了LSC输出光谱随浓度的变化。研究表明，通过一种利用无辐射电子激发态传输和俘获作为吸收与再发射之间中间步骤的系统，可以提高LSC的效率。陷阱发射基本上避免了重吸收问题。
