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首页> 外文会议>Physics, simulation, and photonic engineering of photovoltaic devices II >Evaluation of micrometer scale lateral fluctuations of transport properties in CIGS solar cells
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Evaluation of micrometer scale lateral fluctuations of transport properties in CIGS solar cells

机译：CIGS太阳能电池传输特性的微米级横向波动评估

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摘要

CIGS is a material showing high efficiencies in photovoltaic devices although numerous questions remain about its physical mechanisms. Among them is the influence of the polycrystalline nature on global efficiencies. In order to study the spatial fluctuations of the optoelectronic parameters, two original setups are developed. Firstly a Hyperspectral Imager is used to investigate spectrally resolved luminescence images. It is also possible to calibrate it in absolute values, which means that the signal is measured in number of photons. From photoluminescence measurement we deduce maps of the quasi-Fermi level splitting with variation of 30 meV. These results are compared with a more common confocal microscope, which shows that the carrier transport has to be taken into account for the interpretation of these experiments. Using electroluminescence and reciprocity relations, we calculate map of the External Quantum Efficiency with the Hyperspectral Imager. For this investigation a second setup is developed, using Light Beam Induced Current with different excitation wavelengths. Therefore mapping of the diffusion lengths is possible, exhibiting a distribution around 1.09 μm with standard deviation of 0.10 μm.
机译：CIGS是一种在光伏器件中显示出高效率的材料，尽管对其物理机制仍有许多疑问。其中包括多晶性质对整体效率的影响。为了研究光电参数的空间波动，开发了两个原始设置。首先，高光谱成像仪用于研究光谱分辨的发光图像。也可以将其校准为绝对值，这意味着信号以光子数进行测量。从光致发光测量中，我们推导了变化为30 meV的准费米能级分裂图。将这些结果与更常见的共聚焦显微镜进行比较，该显微镜表明在解释这些实验时必须考虑载体运输。使用电致发光和互易关系，我们使用高光谱成像仪计算外部量子效率的图。为了进行这项研究，开发了第二种设置，使用具有不同激发波长的光束感应电流。因此，扩散长度的映射是可能的，表现出约1.09μm的分布，标准偏差为0.10μm。

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  • 会议地点 San Francisco CA(US)
  • 作者

    A. Delamarre; D. Ory; M. Paire; D. Lincot; J-F. Guillemoles; L. Lombez;

  • 作者单位

    Institute of Research and Development on Photovoltaic Energy (IRDEP, UMR EDF CNRS Chimie Paristech), 6 quai Watier, 78401 Chatou, France;

    Institute of Research and Development on Photovoltaic Energy (IRDEP, UMR EDF CNRS Chimie Paristech), 6 quai Watier, 78401 Chatou, France;

    Institute of Research and Development on Photovoltaic Energy (IRDEP, UMR EDF CNRS Chimie Paristech), 6 quai Watier, 78401 Chatou, France;

    Institute of Research and Development on Photovoltaic Energy (IRDEP, UMR EDF CNRS Chimie Paristech), 6 quai Watier, 78401 Chatou, France;

    Institute of Research and Development on Photovoltaic Energy (IRDEP, UMR EDF CNRS Chimie Paristech), 6 quai Watier, 78401 Chatou, France;

    Institute of Research and Development on Photovoltaic Energy (IRDEP, UMR EDF CNRS Chimie Paristech), 6 quai Watier, 78401 Chatou, France;

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  • 正文语种 eng
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  • 关键词

    CIGS; solar cell; photoluminescence; electroluminescence; external quantum efficiency;

    机译：CIGS；太阳能电池;光致发光电致发光外部量子效率;

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