Cd_0.9−xZn_0.1Mg_xS (x = 0, 0.02, 0.04 and 0.06) nanoparticles were synthesized through chemical route. All the specimens had cubic structure, and it was proved from XRD results that the incorporation of Mg did not alter the cubic structure of Zn:CdS crystal structure. Doping was achieved without forming any secondary phase in the Zn:CdS host lattice. TEM results supported the XRD results for structural and phase confirmation. SEM photographs showed a smoothened picture while Mg doping. EDX and FTIR results confirmed the elemental composition and the presence of targeted elements, respectively. UV–visible absorption and transmittance studies showed that Mg addition produced a blue shift in wavelength and slight reduction in intensity received. The band gap value of Zn- and Mg-doped CdS nanoparticles was extended to the highest value from 3.8 to 4.12 eV. This increment of band gap value was noticed for every concentration of Mg, and it was presented based on the size effect. PL emission peaks were received at 374 nm, 411 nm, 453 nm, 491 nm and 523 nm due to Mg incorporation. These emission peaks were discussed in terms of surface defects and sulphur vacancies. Since these materials possessed excellent optical properties, they can be selected for optoelectronic device applications.

中文翻译：

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镁对Cd 0.9−x Zn 0.1 S纳米粒子在光电应用中的影响

镉_{0.9− x}锌_0.1镁_x硫（x = 0、0.02、0.04和0.06）纳米粒子通过化学途径合成。所有样品均具有立方结构，并且通过X射线衍射结果证明，Mg的掺入不会改变Zn：CdS晶体结构的立方结构。在Zn：CdS主晶格中未形成任何次级相的情况下实现了掺杂。TEM结果支持XRD结果用于结构和相确认。扫描电镜照片显示了镁掺杂后的图像平滑。EDX和FTIR结果分别证实了元素组成和目标元素的存在。紫外可见吸收和透射率研究表明，添加镁会导致波长发生蓝移，强度会略有降低。Zn和Mg掺杂的CdS纳米粒子的带隙值从3.8 eV扩展到了最高值4.12 eV。对于每一个浓度的Mg，带隙值的这种增加都被注意到，并且它是基于尺寸效应呈现的。由于掺入了Mg，在374nm，411nm，453nm，491nm和523nm处接收到PL发射峰。根据表面缺陷和硫空位讨论了这些发射峰。由于这些材料具有出色的光学性能，因此可以选择它们用于光电器件应用。