CHEM01200604004 Shri Sanyasinaidu Boddu - Homi Bhabha ...

Eu 3+ ions after heat treatment at 500°C.
Fig.35:
XRD patterns of β-Ga 2 O 3 doped with 0, 0.75, 1, 3 and 5 at % of Eu 3+ (peak
marked * correspond to Eu 2 O 3 ). Values in brackets show average crystallite size
Fig.36: TEM images of (a) 0, (b) 0.75, (c) 3 and (d) 5 at % Eu doped β - Ga 2 O 3
Fig.37: (a) Emission spectra, (b) decay curve corresponding to 5 D 4 level of Tb 3+ in Tb 3+
doped GaOOH, α-Ga 2 O 3 and β-Ga 2 O 3 nanomaterials. (λ exc = 255 nm and λ em =
544 nm).
Fig.38: (a) Emission spectra of β-Ga 2 O 3 nanomaterials doped with 0, 0.5, 1 and 2 at %
Tb 3+ ions. The corresponding excitation spectra for 1 at % Tb 3+ doped sample,
monitored at 460 and 544 nm emission, are shown in Fig. 38 (b).
Fig. 39: Decay curves corresponding to excited state of the host emission of β-Ga 2 O 3
nanomaterials doped with 0, 0.5, 1 and 2 at % Tb 3+ ions.
Fig.40:
Emission spectrum (a) obtained after 260 nm excitation and excitation
spectrum (b) corresponding to 575 nm emission from β-Ga 2 O 3 :Dy 3+
nanomaterials. Corresponding emission (λ exc = 280 nm) and excitation (λ em =
613 nm) spectrum from Ga 2 O 3 :Eu nanorods are shown in Fig.40 (c and d).
Fig.41:
(a) Emission spectrum and (b) excitation spectrum from Ga 2 O 3 :Er 3+ nanorods.
The excitation and emission wavelengths are 380 and 1535 nm, respectively.
Fig. 42:
XRD pattern of (a) Sb 2 O 3 sample prepared at room temperature in isopropanol
medium. Corresponding patterns from the samples heated at 100, 200 and 400°C
along with bulk Sb 2 O 3 are shown in (b)–(e), respectively.
Fig.43:
(a and b) AFM images showing the nanorods of Sb 2 O 3 at two representative
regions of the sample. TEM and SAED images for the nanorods along with that
of bulk sample are shown in (c)–(f), respectively
Fig. 44: Emission spectra of (a) Sb 2 O 3 nanorods and (b) bulk Sb 2 O 3 as a function of
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