Fast separation of front and bulk defects via photoluminescence on silicon solar cells
Fast separation of front and bulk defects via photoluminescence on silicon solar cells
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DOI：
10.1016/j.solmat.2014.05.029
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发表时间：
2014-09
影响因子：
6.9
通讯作者：
C. Shen;Kai Wang;M. Green
中科院分区：
文献类型：
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作者：
C. Shen;Kai Wang;M. Green
电致发光和光致发光成像以较短的测量时间提供了太阳能电池的空间分辨寿命信息。它的高分辨率特征验证了对局部缺陷的良好可视化。然而，成品电池的发光图像是二维图像。应该包括3维图像的扩展。本文提出了一种分离锋面效应和体效应的快速技术。本文中的“前”指的是前表面、滴头和结点。它的质量在加工过程中可能会有很大的变化，对于大多数细胞来说，这是一个最有趣的区域。实验结果表明，该方法实现了对各种细胞的清晰分离。它有助于优化细胞加工和开发技术。因此，基于其快速、可靠和三维空间分辨率的特征，它可以成为实验室中流行的表征技术。
Electroluminescence and photoluminescence imaging provide spatially resolved lifetime information of solar cells with short measurement time. Its high resolution feature validates good visualization of local defects. However, the luminescence image for finished cells is a 2-dimensional image. An extension to 3-dimensional image should be included. This paper proposed a fast technique for separating front and bulk effects. “Front” in this paper refers to front surface, emitter and junction. Its quality can be varied a lot during processing and it is a most interesting region for most of the cells. Experimental results show that the method achieved a clear separation for various cells. It helped to optimize the cell processing and developing techniques. Therefore, it could become a popular characterization technique in the laboratory based on its fast, reliable and 3-demensional spatially resolved features.