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Growth of nanocrystalline CuS thin films at room temperature by a facile chemical deposition method

机译：通过容易化学沉积法在室温下纳米晶CUS薄膜的生长

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In this paper, we describe the preparation and characterization of nanocrystalline CuS thin films, deposited via an inexpensive and facile chemical bath deposition method at room temperature. X-ray diffraction analysis showed a hexagonal covellite structure. The average diameter of CuS nanocrystals was less than 10 nm, showing quantum size effects. FE-SEM images indicated that the substrate surface was covered by semispherical particles with an average size of about 100 nm. The influence of the deposition time on optical properties of the CuS films was studied. The optical band gap was estimated to be in the range between 2.35 eV and 2.50 eV, exhibiting a considerable blue shift due to quantum size effects. The photoluminescence (PL) spectrum of the CuS films showed two characteristic bands, one narrow and intense band centered at 422 nm and another weak green band at 530 nm.
机译：在本文中，我们描述了在室温下通过廉价的化学浴沉积方法沉积的纳米晶CUS薄膜的制备和表征。 X射线衍射分析显示六边形环椭圆结构。 CU纳米晶体的平均直径小于10nm，显示量子尺寸效应。 Fe-SEM图像表明，基板表面被半球形颗粒覆盖，平均尺寸为约100nm。 研究了沉积时间对CU膜的光学性质的影响。 光学带隙估计在2.35eV和2.50eV之间的范围内，由于量子尺寸效应，表现出相当大的蓝色移位。 CUS膜的光致发光（PL）谱显示出两个特征条带，一个窄且强烈的带以422nm为中心，并且在530nm处具有另一个弱绿色带。

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