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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Hydrothermal fabrication of chalcopyrite-type CuInS_2 film and their optical properties
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Hydrothermal fabrication of chalcopyrite-type CuInS_2 film and their optical properties

机译:黄铜矿型CuInS_2薄膜的水热制备及其光学性能

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In this work, CuInS_2 (CIS) particles were prepared by a simple hydrothermal method using the precursors of Cu(NO_3)_2, In(NO_3)_3 and CS(NH_2)_2 in aqueous solution at 160°C for 2 h, followed by a spin coating process on the quartz substrate, so a CIS thin film was obtained. The CIS film was analyzed by means of a transmission electron microscope, an atomic force microscope, x-ray diffraction, energy dispersive spectroscopy, x-ray photoelectron spectroscopy and UV-visible absorption spectroscopy. The results show that the even and compact CIS thin film is composed of particles with a regular morphology and a uniform size distribution, with chalcopyrite structure. The crystalline quality of CIS film is significantly improved, growing along the (112) orientation. Its composition is close to the stoichiometric ratio (1:1:2) of the single CIS phase. Besides, the CIS thin film has an obvious absorption in the visible light region, and the band gap energy of the CIS film is approximately 1.40 eV. The method provides a potential new approach to fabricating CIS thin film applied in the field of solar cells.
机译:在这项工作中,通过简单的水热方法,使用Cu(NO_3)_2,In(NO_3)_3和CS(NH_2)_2的前体在160°C的水溶液中制备2h的CuInS_2(CIS)颗粒,然后在石英基板上进行旋涂工艺,从而获得CIS薄膜。借助于透射电子显微镜,原子力显微镜,X射线衍射,能量色散光谱,X射线光电子光谱和UV-可见吸收光谱来分析CIS膜。结果表明,均匀致密的CIS薄膜由规则形貌,尺寸分布均匀,黄铜矿结构的颗粒组成。沿(112)方向生长时,CIS薄膜的晶体质量得到显着改善。它的组成接近单个CIS相的化学计量比(1:1:2)。此外,CIS薄膜在可见光区域具有明显的吸收,并且CIS薄膜的带隙能量约为1.40eV。该方法提供了潜在的新方法来制造应用于太阳能电池领域的CIS薄膜。

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