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Polarization dependent Raman spectroscopy characterization of kesterite Cu_2ZnSnS_4 single crystals

机译:Kesterite Cu_2ZnSnS_4单晶的偏振相关拉曼光谱表征

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摘要

The vibrational properties of kesterite Cu_2ZnSnS_4 (CZTS) single crystals were studied by polarization-dependent Raman scattering measurements. The CZTS crystals grown by chemical vapor transport technique using iodine trichloride as a transport agent consist of several mirror-like planes. The detailed analysis of the experimental spectra obtained from different planes allows determining the symmetry assignment of the observed Raman-active modes. The wavenumber values of Raman-active modes are compared with the results of recent theoretical calculations. The presented data are useful for examination of CZTS absorber films applied for solar cells to clarify the existence of structural or phase inhomogeneities.
机译:通过偏振相关的拉曼散射测量研究了方石英Cu_2ZnSnS_4(CZTS)单晶的振动特性。使用三氯化碘作为传输剂通过化学气相传输技术生长的CZTS晶体由数个镜状平面组成。从不同平面获得的实验光谱的详细分析可以确定观察到的拉曼活性模式的对称分配。拉曼活动模式的波数值与最近的理论计算结果进行了比较。提出的数据可用于检查用于太阳能电池的CZTS吸收膜,以阐明结构或相不均匀性的存在。

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  • 会议地点 San Francisco CA(US)
  • 作者单位

    Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan;

    Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan;

    Helmholtz Zentrum Berlin fur Materialien and Energie GmbH, D-14109 Berlin, Germany;

    Department of Electrical Engineering, National Taiwan Ocean University, Keelung 202, Taiwan;

    Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan;

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