► Nano NiO thin films were prepared by an electrodeposition in ionic liquid. ► The NiO films exhibit high coloration efficiency (CE). ► The fast switching time and good cycling durability were ...observed for the film. ► The film deposited for 10s exhibit the ultra fast switching time and maximum CE.
Nanostructured nickel oxide (NiO) thin films were prepared by a simple electrodeposition in choline chloride-based ionic liquid followed by an oxidation in air. Uniform granules and some voids opened between these granules were presented in the polycrystalline NiO films deposited for 10 and 30s, but the film became compact as the deposition time increased to 60s. The optical transmittance of the film decreased with the increase of the film thickness. All the NiO films exhibit high coloration efficiency, fast electrochromic switching and good cycling durability. The ultra fast switching time (0.74s and 0.88s) and maximum coloration efficiency of 250cm2C−1 were observed for the film deposited for 10s.
A
bstract
By using 6.32 fb
−
1
of data collected with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we perform an amplitude analysis of the decay
$$ {D}_s^{+}\to ...{K}_S^0{\pi}^{+}{\pi}^0 $$
D
s
+
→
K
S
0
π
+
π
0
and determine the relative fractions and phase differences of different intermediate processes, which include
$$ {K}_S^0\rho $$
K
S
0
ρ
(770)
+
,
$$ {K}_S^0\rho $$
K
S
0
ρ
(1450)
+
,
K
*
(892)
0
π
+
,
K
*
(892)
+
π
0
, and
K
*
(1410)
0
π
+
. With the detection efficiency based on the amplitude analysis results, the absolute branching fraction is measured to be
$$ \mathrm{\mathcal{B}}\left({D}_s^{+}\to {K}_S^0{\pi}^{+}\pi 0\right)=\left(5.43\pm {0.30}_{\mathrm{stat}}\pm {0.15}_{\mathrm{syst}}\right)\times {10}^{-3} $$
ℬ
D
s
+
→
K
S
0
π
+
π
0
=
5.43
±
0.30
stat
±
0.15
syst
×
10
−
3
.
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