The XPS spectra of phosphorus pentoxide were collected with a VSW HA150, which is equipped with a monochromatic Al Kα x-radiation, a 16 channel multichannel detector, and an electrostatic hemispherical analyzer with a radius of 150 mm providing an instrument with exceptional capabilities. Monochromatic radiation provides a distinct clarity to the rich peak structure in the valence band region which shows significant differences from the phosphates. The valence band, survey, and P 2s, P 2p, O 1s, and C 1s core levels are reported.

1.
M. P.
Seah
,
I. S.
Gilmore
, and
G.
Beamson
,
Surf. Interface Anal.
26
,
642
(
1998
).

Supplementary Material

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