
Structural and optical modifications of CdS properties in CdS-Au …
2021年3月1日 · The binding energies of elements in the CdS and CdS-Au samples were measured by X-ray photoelectronic spectroscopy (XPS). The materials crystalline structure was studied by X-ray diffraction (XRD). A change from disperse like-single-crystalline (highly oriented) CdS NP’s films to monodisperse CdS NP’s–Au QD’s like-single-crystalline ...
Energy band alignment at the heterointerface between CdS and …
2020年10月27日 · In this paper, we perform a systematic study on the band alignment at the CdS/CZTS and CdS/ACZTS interfaces using X-ray photoemission spectroscopy (XPS) and ultraviolet photoemission...
Investigations of CdS and Ag–CdS nanoparticles by X-ray …
2010年12月15日 · Effect of pH and dopant concentration on CdS and Ag–CdS nanoparticles respectively have been successfully investigated by XPS. XPS results are in agreement with our previous studies. Different sulphur species in S 2p core levels were identified for both doped and undoped samples.
XPS spectra of Cd 3d (a), Se 3d (b), S 2p (c) and Zn 2p (d) of ...
The XPS spectrum (Figure 5d) of Cd 3 d doublet peaks at 405.3 and 412.1 eV are assigned to Cd 3 d5/2 and Cd 3 d3/2, respectively, indicating the presence of a + 2 oxidation state of Cd in...
Photophysical Properties of CdSe/CdS core/shell quantum dots …
2016年6月1日 · X-ray photoelectron spectroscopy (XPS) data from a series of CdSe/CdS core/shell QDs with alternating Cd or S surface passivation is shown in Fig. 1. XPS is a widely-used technique for providing information about the surface composition of solid state materials [53] , [54] , due to the slightly higher electron binding energies of surface atoms ...
(a) XPS of Cd 3d core-level spectra and (b) S 2p core
In the Cd 3d high-resolution XPS spectra for all samples (Fig. 7b), two peaks located at 404.8 and 411.5 eV are assigned to Cd3d 5/2 and Cd3d 3/2 orbitals, respectively, which is accordance...
Synthesis, structural and optical properties of CdS ... - Springer
2016年4月6日 · CdS nanoparticles (NPs) were synthesized using co-precipitation method. X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to confirm the structures and morphologies of CdS NPs. X-ray diffraction data confirmed the crystal structure of the CdS NPs.
Combining HR-TEM and XPS to elucidate the core–shell ... - Nature
2020年11月26日 · By combining high-resolution transmission electron microscopy (HR-TEM) and X-ray photoelectron spectroscopy (XPS), a novel whole nanoobject approach is developed representatively for an...
CdS纳米半导体薄膜的制备和表征及光电性能 - 百度文库
采用 xps对在体系 d 制备的纳米 cds 薄膜的组成进行了分析 , 得出镉元素与硫元素的含量比大致为 第 1期 栾野梅等 : CdS纳米半导体薄膜的制备和表征及光电性能
周莹课题组Nature Commun.:实验+计算揭示单原子Au/CdS在光 …
如图1所示,通过 XRD 、 TEM 和 EPR 证实了Cd1-XS的成功制备。 接着作者进一步用浸渍法分别合成了原子级分散和纳米团簇的金负载的Au/Cd1−xS样品。 XANES 、 EXAFS 和EPR确定了Au负载的位置,并据此构建了理论计算模型。 图1. a)样品的XRD图谱,b)HAADF-STEM图像,其中单原子金位点用黄色圆圈标出,c)元素图谱,d)XAFS分析,e)傅里叶变换(FT)EXAFS谱。 图2进行了光催化CO2还原试验,以评估金的负载对光还原效率的影响。 Cd1-XS的一氧化碳 …
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