AbstractWe bombarded $$\mbox{$\text{Cu}_{3}\text{Pd}(111)$}$$
Cu
3
Pd
(
111
)
and $$\mbox{$\text{Cu}_{3}\text{Pt}(111)$}$$
Cu
3
Pt
(
111
)
with a 2.3 eV hyperthermal oxygen molecular beam (HOMB) source, and characterized the corresponding (oxide) surfaces with synchrotron-radiation X-ray photoemission spectroscopy (SR-XPS). At $$300\,\text{K}$$
300
K
, CuO forms on both $$\mbox{$\text{Cu}_{3}\text{Pd}(111)$}$$
Cu
3
Pd
(
111
)
and $$\mbox{$\text{Cu}_{3}\text{Pt}(111)$}$$
Cu
3
Pt
(
111
)
. When we increase the surface temperature to $$500\,\text{K}$$
500
K
, $$\mbox{$\text{Cu}_{2}\text{O}$}$$
Cu
2
O
also forms on $$\mbox{$\text{Cu}_{3}\text{Pd}(111)$}$$
Cu
3
Pd
(
111
)
, but not on $$\mbox{$\text{Cu}_{3}\text{Pt}(111)$}$$
Cu
3
Pt
(
111
)
. For comparison, $$\mbox{$\text{Cu}_{2}\text{O}$}$$
Cu
2
O
forms even at $$300\,\text{K}$$
300
K
on Cu(111). On $$\mbox{$\text{Cu}_{3}\text{Au}(111)$}$$
Cu
3
Au
(
111
)
, $$\mbox{$\text{Cu}_{2}\text{O}$}$$
Cu
2
O
forms only after $$500\,\text{K}$$
500
K
, and no oxides can be found at $$300\,\text{K}$$
300
K
. We ascribe this difference in Cu oxide formation to the mobility of the interfacial species (Cu/Pd/Pt) and charge transfer between the surface Cu oxides and subsurface species (Cu/Pd/Pt).
Synthesis and Luminescent Properties of Eu3+/Tb3+ Rare Earth Ions Doped Li2SrSiO4 Phosphors
