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Synthesis and characterization of small dimensional tructures of Er-Doped SnO2 and Erbium-Tin-Oxide

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Maestre Varea, David and Hernandez, Elena and Cremades Rodríguez, Ana Isabel and Matteo, Amati and Piqueras de Noriega, Javier (2012) Synthesis and characterization of small dimensional tructures of Er-Doped SnO2 and Erbium-Tin-Oxide. Crystal Growth & Design, 12 (5). pp. 2478-2484. ISSN 1528-7483

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Official URL: http://pubs.acs.org/doi/pdf/10.1021/cg300106k


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Abstract

Microtubes of Er-doped SnO2, as well as nanorods and nanoparticles, have been fabricated by a thermal evaporation deposition method at temperatures between 1400 and 1500 degrees C, by using a pellet of compacted SnO2 and Er2O3 powder mixture as precursor. Er2Sn2O7 has been also detected by X-ray diffraction spectroscopy. Energy dispersive X-ray spectroscopy and photoelectron spectroscopy measurements demonstrate that the microtubes contain a small amount of Er, below 0.5 at. %, different from regions from the surface of the pellets where the tubes grow, which shows a variable Er concentration up to 25 at. %. Cathodoluminescence spectra confirmed the presence of Er in the microtubes, as well as in the surface of the pellet, where emissions in the visible and the infrared range at 1.87, 2.23, and 0.81 eV are observed. The luminescence signal varies as a function of the thermal parameters used during the microtubes growth. The mechanisms of Er incorporation are discussed.


Item Type:Article
Additional Information:

© 2012 American Chemical Society. This work was supported by MICINN (MAT2006-01259,
MAT2009-07782, CSD 2009-00013) and BSCH-UCM (Group
910146).

Uncontrolled Keywords:Sol-Gel Sno2, Temperature-Dependence, Luminescence, Photoluminescence, Nanocrystals, Spectroscopy, Nanowires, Glasses, Growth, Films
Subjects:Sciences > Physics > Materials
ID Code:21233
Deposited On:24 May 2013 15:32
Last Modified:13 Feb 2018 15:38

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