Warm white light emitting ThO{sub 2}:Sm{sup 3+} nanorods: Cationic surfactant assisted reverse micellar synthesis and Photoluminescence properties

Journal Article · Wed Jan 01 04:00:00 EST 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.09.010· OSTI ID:22341878

Gupta, Ruma ^[1]; Natarajan, V.; Godbole, S. V. ^[2]

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1. Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)
2. Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)

Graphical abstract: - Highlights: • ThO{sub 2}:Sm{sup 3+} nanoparticles have been synthesized using cationic surfactant assisted reverse micellar route. • HRTEM shows the formation of thoria nanorods. • Photoluminescence investigation shows host as well as samarium ion emission. • Time resolved fluorescence spectroscopy shows the presence of two types of samarium ion in thoria host. - Abstract: Sm{sup 3+} activated thorium oxide nanorods were synthesized by cationic surfactant assisted reverse micellar route. Phase purity, morphological and luminescent properties were investigated by X-ray diffraction, high resolution transmission electron microscopy and photoluminescence spectroscopy. Upon UV light excitation (245 nm), ThO{sub 2}:Sm{sup 3+} exhibited host emission at 447 nm, along with characteristic emission lines of Sm{sup 3+} at 569, 609, 662 and 716 nm. Lifetime spectroscopy shows the presence of two types of Sm{sup 3+} (τ = 1.1 ms and 4.9 ms) with different asymmetric ratios.

• OSTI ID: 22341878
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 49; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
FLUORESCENCE SPECTROSCOPY
ION EMISSION
NANOPARTICLES
NANOSTRUCTURES
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
SAMARIUM IONS
SURFACTANTS
SYNTHESIS
THORIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION