Preparation and characterization of stable aqueous suspensions of up-converting Er3+/Yb3+-doped LiNbO3 nanocrystals

Villegas Gracia, Marina and Caballero Cuesta, Amador and Quintanilla, M. and Sanz García, J.A. and Cantelar, E. and Cussó, F. (2011). Preparation and characterization of stable aqueous suspensions of up-converting Er3+/Yb3+-doped LiNbO3 nanocrystals. "Applied Physics B: Lasers and Optics", v. 102 (n. 3); pp. 651-658. ISSN 0946-2171. https://doi.org/10.1007/s00340-011-4376-8.

Description

Title: Preparation and characterization of stable aqueous suspensions of up-converting Er3+/Yb3+-doped LiNbO3 nanocrystals
Author/s:
  • Villegas Gracia, Marina
  • Caballero Cuesta, Amador
  • Quintanilla, M.
  • Sanz García, J.A.
  • Cantelar, E.
  • Cussó, F.
Item Type: Article
Título de Revista/Publicación: Applied Physics B: Lasers and Optics
Date: 2011
Volume: 102
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The preparation of LiNbO3:Er3+/Yb3+ nanocrystals and their up-conversion properties have been studied. It is demonstrated that polyethyleneimine- (PEI) assisted dispersion procedures allow obtaining stable aqueous LiNbO3:Er3+/Yb3+ powder suspensions, with average size particles well below the micron range (100–200 nm) and the isoelectric point of the suspension reaching values well above pH 7. After excitation of Yb3+ ions at a wavelength of 980 nm, the suspensions exhibit efficient, and stable, IR-to-visible (green and red) up-conversion properties, easily observed by the naked eye, very similar to those of the starting crystalline bulk material.

More information

Item ID: 12357
DC Identifier: http://oa.upm.es/12357/
OAI Identifier: oai:oa.upm.es:12357
DOI: 10.1007/s00340-011-4376-8
Official URL: http://www.springerlink.com/content/v787115wj13xn20v/
Deposited by: Memoria Investigacion
Deposited on: 28 Aug 2012 10:12
Last Modified: 21 Apr 2016 11:36
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