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The dependence of the crystalline volume fraction on the crystallite size for hydrogenated nanocrystalline silicon based solar cells

机译:氢化纳米晶硅基太阳能电池的晶体体积分数对晶粒尺寸的依赖性

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We have performed an analysis on three hydrogenated nanocrystalline silicon (nc-Si:H) based solar cells. In order to determine the impact that impurities play in shaping the material properties, the XRD and Raman spectra corresponding to all three samples were measured. The XRD results, which displayed a number of crystalline silicon-based peaks, were used in order to approximate the mean crystallite sizes through Scherrer's equation. Through a peak decomposition process, the Raman results were used to estimate the corresponding crystalline volume fraction. It was noted that small crystallite sizes appear to favor larger crystalline volume fractions. This dependence seems to be related to the oxygen impurity concentration level within the intrinsic nc-Si:H layers.
机译:我们对三种氢化纳米晶硅(nc-Si:H)太阳能电池进行了分析。为了确定杂质对成形材料性能的影响,测量了与所有三个样品相对应的XRD和拉曼光谱。使用XRD结果显示了许多基于晶体硅的峰,以便通过Scherrer方程近似平均晶粒尺寸。通过峰分解过程,拉曼结果用于估计相应的晶体体积分数。注意到小的晶粒尺寸似乎有利于更大的晶体体积分数。这种依赖性似乎与本征nc-Si:H层中的氧杂质浓度水平有关。

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    School of Engineering, The University of British Columbia, Kelowna, BC, Canada;

    Department of Materials Engineering, The University of British Columbia, Vancouver, BC, Canada;

    Advanced Materials and Process Engineering Laboratory, The University of British Columbia, Vancouver, BC, Canada;

    Department of Materials Engineering, The University of British Columbia, Vancouver, BC, Canada;

    School of Engineering, The University of British Columbia, Kelowna, BC, Canada;

    United Solar Ovonic LLC, Troy, MI, United States;

    United Solar Ovonic LLC, Troy, MI, United States;

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