Bias-dependence of luminescent coupling efficiency in multijunction solar cells
Bias-dependence of luminescent coupling efficiency in multijunction solar cells
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DOI：
10.1364/oe.23.00a219
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发表时间：
2015-04-06
期刊：
影响因子：
3.8
通讯作者：
Harris, James S.
中科院分区：
文献类型：
--
作者：
Jia, Jieyang;Miao, Yu;Harris, James S.
在这项工作中，我们提出了一种改进的方法，通过引入依赖于偏压的发光耦合效率来模拟多结太阳电池的特性。具有恒定发光耦合效率的标准双二极管等效电路模型由于不包括来自光生载流子的复合电流，其精度有限。因此，我们提出了一种与偏置相关的发光耦合效率的替代分析方法来模拟多结单元的行为。我们发现，在耦合效率恒定与偏置相关的情况下，通过模拟产生的J-V特性和电池性能有明显的差异。结果表明，引入依赖于偏置的耦合效率可以更准确地模拟多结电池在实际工作条件下的行为。(C)2015年美国光学学会
In this work, we demonstrate an improved method to simulate the characteristics of multijunction solar cell by introducing a bias-dependent luminescent coupling efficiency. The standard two-diode equivalent-circuit model with constant luminescent coupling efficiency has limited accuracy because it does not include the recombination current from photogenerated carriers. Therefore, we propose an alternative analytical method with bias-dependent luminescent coupling efficiency to model multijunction cell behavior. We show that there is a noticeable difference in the J-V characteristics and cell performance generated by simulations with a constant vs. bias-dependent coupling efficiency. The results indicate that introducing a bias-dependent coupling efficiency produces more accurate modeling of multijunction cell behavior under real operating conditions. (C) 2015 Optical Society of America