Structural studies and physical properties of novel Sm3+-doped Sb2Se3 nanorods

Title
Structural studies and physical properties of novel Sm3+-doped Sb2Se3 nanorods
Author(s)
주상우요네스피로즈살라리민봉기알레미[알레미]
Keywords
SINGLE-CRYSTALS; BI2SE3; NANOCRYSTALS; SM3+; LN; NANOMATERIALS; LUMINESCENCE; MORPHOLOGY; PHASE; GD3+
Issue Date
201110
Publisher
ELSEVIER SCIENCE BV
Citation
PHYSICA B-CONDENSED MATTER, v.406, no.20, pp.3831 - 3835
Abstract
Sm3+ doped Sb2Se3 nanorods were synthesized by the co-reduction method at 180 degrees C and pH=12 for 48 h. Powder XRD patterns indicate that the SmxSb2-xSe3 crystals (x=0.00-0.05) are isostructural with Sb2Se3. The cell parameters increase for Sm3+ upon increasing the dopant content (x). SEM images show that doping of Sm3+ ions in the lattice of Sb2Se3 results in nanorods. High-resolution transmission electron microscopic (HRTEM) studies reveal that the Sm0.05Sb1.95Se3 is oriented in the [10 - 1] growth direction. UV-vis absorption reveals mainly electronic transitions of the Sm3+ ions in doped nanomaterials. Emission spectra of doped materials, in addition to the characteristic red emission peaks of Sb2Se3, show other emission bands originating from f-f transitions of the Sm3+ ions. The electrical conductance of Sm-doped Sb2Se3 is higher than undoped Sb2Se3 and increase with temperature. (C) 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/24424http://dx.doi.org/10.1016/j.physb.2011.07.005
ISSN
0921-4526
Appears in Collections:
공과대학 > 기계공학부 > Articles
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