Yttrium

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Yttrium

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Orbitals and Energies #

Note – these are listed in BINDING ENERGY

 

Y 3d ≈ 156 eV

Y 3s ≈ 395 eV

Y 3p ≈ 302 eV

Y 4s ≈ 46 eV

Y 4p ≈ 26 eV

Etched Y2O3 XPS Spectra - Survey Spectra Showing Y Peaks
Etched Y2O3 XPS Spectra - Survey Spectra Showing Y Peaks

Doublet Separations #

Y 3d = 2 eV

Y 3p = 11.9 eV

XPS of Y 3d with doublet separation

Common Overlaps for Y 3d #

Bi 4f – Ho 4d – Dy 4d – Bi 5s – Ra 5p – Se 3p – Cs 4p – Ga 3s S 2p

Etched Y2O3 XPS Spectra - Y 3d Region
Etched Y2O3 XPS Spectra - Y 3d Region

Auger Energies #

Note – these are listed in KINETIC ENERGY

 

Y MNN ≈ 120 eV

Common Binding Energies – Y 3d #

Species #

B.E. / eV #

Charge Ref #

Reference #

Y Metal

155.6

Au 4f (83.99 eV)

Y2O3

156.8

C 1s (284.8 eV)

Theory and Background #

Yttrium exhibits a classic spin-orbit doublet, with no extraordinary concerns regarding photoemission.

XPS of Y 3d with doublet separation

Experimental Advice #

If analysing Yttrium and Gallium containing materials, such as YSGG, or AlYN + GaN semiconductors – take care of the Y 3d – Ga 3s overlap and record the Y 3p region also. Ga 3s overlaps directly with Y 3d5/2 – however given the small doublet separation of Y 3d it may be difficult to properly deconvolute this overlap – particularly in the case of multiple oxidation states of Y or Ga.

Data Analysis Guidance #

Y 3d for oxides is fit well with a LA(1.53,253) lineshape.

Reference Datasets #

 

Coming soon

References #

  1. Mongstad, Trygve, et al. “The electronic state of thin films of yttrium, yttrium hydrides and yttrium oxide.” Solar energy materials and solar cells 128 (2014): 270-274. Read it online here.

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