CHEM01200604004 Shri Sanyasinaidu Boddu - Homi Bhabha ...

1.0
5 D 0
7 F 4
Normalised intensity
0.8
0.6
0.4
0.2
5 D 0
5 D 0
7
F 1
7 F 2
1.0
Intensity
0.5
Eu-O charge
transfer transition
0.0
200 250 300 350 400
Wavelength (nm)
5
D 0
0.0
550 600 650 700 750
Wavelength (nm)
7
F 3
Fig.48. Emission spectrum obtained after excitation at 395 nm from europium hydroxide
sample prepared by the same procedure as adopted for antimony oxide nanorods. The
excitation spectrum corresponding to 615 nm emission is shown in the inset.
Intensity (arb.unts)
1000
100
10
1
10000 0.5 1.0 1.5 2.0
Time (ms)
1000
100
10
1
1000
100
10
(a)
(b)
0.2 0.4 0.6 0.8 1.0
Time (ms)
(c)
0.5 1.0 1.5 2.0
Time (ms)
Fig.49. Decay curves corresponding to 5 D 0 level of Eu 3+ in (a) Sb 2 O 3 nanorods prepared in
presence of Eu 3+ (b) Europium hydroxide sample prepared by the identical procedure
as adopted for Sb 2 O 3 nanorods and (c) bulk Sb 2 O 3 prepared in presence of Eu 3+ .
Samples were excited at 395 nm and emission was monitored at 615 nm.
96