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首页> 外文期刊>Materials science in semiconductor processing >Comparative studies on the structural, morphological, optical, and electrical properties of nanocrystalline PbS thin films grown by chemical bath deposition using two different bath compositions
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Comparative studies on the structural, morphological, optical, and electrical properties of nanocrystalline PbS thin films grown by chemical bath deposition using two different bath compositions

机译：使用两种不同的浴液组成通过化学浴沉积法生长的纳米晶PbS薄膜的结构，形态，光学和电学性质的比较研究

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摘要

High-quality lead sulfide (PbS) thin films were synthesized by chemical bath deposition from two baths with different compositions. One of them (bath-I) contained an aqueous solution of lead acetate, thiourea, sodium hydroxide, and the second (bath-II) had additional triethanolamine. The introduction of triethanolamine reduced the grain size and increased the optical band gap of the PbS nanoparticles. The structure, morphology, and optical properties of the obtained films were investigated and compared with respect to the deposition time. X-ray diffraction data were used to obtain the crystallite size, lattice constant, and strain of the films. Atomic force microscopy results show that the roughness and rms-surface slope of the samples obtained from bath-I (PbS-I) were higher than those of bath-II (PbS-II) samples. PbS thin films with high reflectance (~61%) in the near-infrared region, which is important in our solar system, were obtained. The band gap, extinction coefficient, and refractive index of the samples were calculated. Furthermore, Raman analysis was performed and electrical properties of the samples were studied.
机译：通过化学浴沉积，从具有不同成分的两个浴中合成了高质量的硫化铅（PbS）薄膜。其中一个（浴-I）包含乙酸铅，硫脲，氢氧化钠的水溶液，第二个（浴-II）具有另外的三乙醇胺。三乙醇胺的引入减小了PbS纳米颗粒的晶粒尺寸并增加了其光学带隙。研究所得膜的结构，形态和光学性质，并就沉积时间进行比较。 X射线衍射数据用于获得微晶尺寸，晶格常数和膜的应变。原子力显微镜结果表明，从浴液I（PbS-I）获得的样品的粗糙度和均方根表面斜率均高于浴液II（PbS-II）的样品。获得了在我们的太阳系中很重要的近红外区域具有高反射率（〜61％）的PbS薄膜。计算样品的带隙，消光系数和折射率。此外，进行了拉曼分析并研究了样品的电性能。

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