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首页> 外文期刊>Optical Materials >Band gap tuning and fluorescence properties oflead sulfide Pb_(0.9)A_(0.1)S (A: Fe, Co, and Ni) nanoparticles by transition metal doping
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Band gap tuning and fluorescence properties oflead sulfide Pb_(0.9)A_(0.1)S (A: Fe, Co, and Ni) nanoparticles by transition metal doping

机译：过渡金属掺杂硫化铅Pb_（0.9）A_（0.1）S（A：Fe，Co和Ni）纳米粒子的带隙调谐和荧光性质

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Transition metal-doped lead sulfide nanoparticles (PbS-NPs) were synthesized by co-precipitation method. The crystallite phase and morphological studies were carried out by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Optical studies were performed by UV-Visible absorption, fluorescence emission spectroscopy and Fourier transforms infrared spectroscopy (FTIR). XRD analysis reveals that the pure and transition metal-doped PbS- NPs have a single crystalline phase with cubic structure devoided of any other secondary phase. The notable effect on optical absorbance and band gap was observed with transition metal doping in lead sulphide. The optical energy band gap values were found to increase with the doping of transition metal. UV Visible absorption and fluorescence emission spectra display a blue shift with subsequent transition metal doping which may arise due to quantum confinement effect making it worth for having applications in optoelectronic devices. (C) 2017 Elsevier B.V. All rights reserved.
机译：采用共沉淀法合成了过渡金属掺杂的硫化铅纳米粒子（PbS-NPs）。通过X射线衍射（XRD）和透射电子显微镜（TEM）进行了微晶相和形态学研究。通过紫外可见吸收，荧光发射光谱和傅里叶变换红外光谱（FTIR）进行光学研究。 XRD分析表明，纯的和过渡金属掺杂的PbS-NP具有单晶相，立方结构不含任何其他次级相。在硫化铅中掺入过渡金属可观察到对光吸收和带隙的显着影响。发现光能带隙值随过渡金属的掺杂而增加。紫外可见吸收和荧光发射光谱显示蓝移，随后的过渡金属掺杂可能由于量子限制效应而出现，因此值得在光电器件中应用。 （C）2017 Elsevier B.V.保留所有权利。

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