It also increased somewhat with the amount of contaminant oxygen present in the ingots. These procedures can remove uncertainties in analysis of. The use of the modied Auger parameter for Cu and Zn species allows for corroborating evidence when there is uncertainty in the binding energy assignment. compounds and the exact binding energies of the Cu(0) and Cu(I) peaks.
Collect principal Cu LMM peak, as well as Cu2p. The intensity of this 59 eV peak increased with that of the Na 1s peak at 1071 eV at the surface and with the atomic percentage of the Na added to the Bridgman melt. XPS Peak tting Transition metals Oxides abstract. Copper Transition Metal Chemical state differentiation can be difficult with XPS only. However, the second peak only appeared when Na or Na_2Se had been previously added to the melt. The first of these, previously assigned mainly to the basic CuInSe_2 compound, increased with argon etching time, starting from the ingot surface, but was little affected by the presence of the Na. In particular, two main 3d peaks were observed at binding energies of 54.5 and 59 eV. Here, the XPS peaks Se 3d, Na 1s and O 1s were given special attention. Spin orbital splitting and peak area ratios assist in. Abstract: Using multi-crystalline samples of Bridgman-grown CuInSe_2_+_x, containing added quantities of elemental sodium or Na_2Se, detailed XPS measurements were made to determine the location and action of the sodium. The peak area ratios of a core level of an element in different compounds are also nearly the same. 3C, two dominant peaks are located at 932.6 and 934.5 eV for Fe(OH) x Cu-MOF NBs, which can be well assigned to the 2p 3/2 of Cu + and Cu 2+ species.
From the deconvolution results of Cu 2p shown in Fig. 59 eV peak is assigned to Na_2SeO_3 from oxidation of Na_2Se, controlling stoichiometry. To clarify the electronic structure of Fe(OH) x Cu-MOF NBs, XPS characterizations were conducted (Fig.photoelectron peaks of Au 4f 7/2, Ag 3d 5/2 or Cu 2p 3/2 the Fermi levels of the sample and the spectrometer are aligned KE of the photoelectrons is measured. Photoemission Spectroscopy (XPS) 7.1 Principles 7.2 Interpretation 7.2.1 Notations 7.2.2 Electron workfunction 7.2.3 Chemical shifts. The first peak can correspond to some surface products of the hydrogen. X-ray Photoelectron Spectroscopy (XPS) 7. XPS Se 3d peak at 59 eV in CIS increases with sodium and oxygen content. XPS spectrum for core levels (Cu2p) of the Cu-ERI reduced at 450 oC inH2 flow.XPS Se 3d peak at 54.5 eV indicates increasing CIS proportion with depth into surface.For Bridgman CIS with Na in melt, Na is only found in 100 nm from solid surface.