Quantitative determination of luminescent coupling in multijunction solar cells from spectral photovoltage measurements
Quantitative determination of luminescent coupling in multijunction solar cells from spectral photovoltage measurements
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通过光谱光电压测量定量测定多结太阳能电池中的发光耦合
DOI：
10.1103/physrevapplied.6.014001
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发表时间：
2016
影响因子：
4.6
通讯作者：
I. Artacho
中科院分区：
文献类型：
--
作者：
D. F. Marrón;E. Barrigón;M. Ochoa;I. Artacho
我们提出了一个简单的方法来量化的多结光伏器件中的堆叠子电池之间的发光耦合（LC）的大小。通过比较两个光电压谱，可以直接获得在同一器件内的高带隙子电池对底层低带隙单元产生的发光的影响，作为可测量的开路电压差。此外，我们的研究明确地确定LC作为多结太阳能电池的调制机制，在光反射测量中从掩埋的子电池产生响应。
We present a simple method to quantify the magnitude of luminescent coupling (LC) between stacked subcells in multijunction photovoltaic devices. The effect of luminescence produced at high-band-gap subcells on underlying low-gap units within the same device can be directly accessed as a measurable open-circuit voltage difference by comparing two photovoltage spectra. Additionally, our study unambiguously identifies LC as the modulation mechanism across multijunction solar cells generating a response from buried subcells in photoreflectance measurements.