Author, as appears in the article.: William Barrera, Elixir; Cinta Pujol, Maria; Diaz, Francesc; Choi, Soo Bong; Rotermund, Fabian; Park, Kyung Ho; Jeong, Mun Seok; Cascales, Concepcion
Department: Química Física i Inorgànica
URV's Author/s: Díaz González, Francisco Manuel / Pujol Baiges, Maria Cinta
Keywords: Affordable and clean energy
Abstract: Yb3+and Ln3+(Ln3+= Er3+or Tm3+) codoped Lu2O3nanorods with cubic Ia 3̄ symmetry have been prepared by low temperature hydrothermal procedures, and their luminescence properties and waveguide behavior analyzed by means of scanning near-field optical microscopy (SNOM). Room temperature upconversion (UC) under excitation at 980 nm and cathodoluminescence (CL) spectra were studied as a function of the Yb+concentration in the prepared nanorods. UC spectra revealed the strong development of Er3+4F9/2→4I15/2(red) and Tm3+1G4→3H6(blue) bands, which became the pre-eminent and even unique emissions for corresponding nanorods with the higher Yb3+concentration. Favored by the presence of large phonons in current nanorods, UC mechanisms that privilege the population of4F9/2and1G4emitting levels through phonon-assisted energy transfer and non-radiative relaxations account for these observed UC luminescence features. CL spectra show much more moderate development of the intensity ratio between the Er3+4F9/2→4I15/2(red) and2H11/2,4S3/2→4I15/2(green) emissions with the increase in the Yb3+content, while for Yb3+, Tm3+-codoped Lu2O3nanorods the dominant CL emission is Tm3+1D2→3F4(deep-blue). Uniform light emission along Yb3+, Er3+-codoped Lu2O3rods has been observed by using SNOM photoluminescence images; however, the rods seem to be too thin for propagation of light. © 2011 IOP Publishing Ltd.
Thematic Areas: Química Physics, applied Odontología Nanoscience and nanotechnology Nanoscience & nanotechnology Medicina veterinaria Medicina ii Medicina i Mechanics of materials Mechanical engineering Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materials science Materiais Matemática / probabilidade e estatística Interdisciplinar General medicine General materials science General chemistry Farmacia Ensino Engineering, multidisciplinary Engineering Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrical and electronic engineering Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Chemistry (miscellaneous) Chemistry (all) Biotecnología Bioengineering Astronomia / física Antropologia / arqueologia
ISSN: 09574484
Author's mail: mariacinta.pujol@urv.cat f.diaz@urv.cat
Author identifier: 0000-0002-1052-8031 0000-0003-4581-4967
Record's date: 2024-11-16
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Nanotechnology. 22 (7): 075205-075205
APA: William Barrera, Elixir; Cinta Pujol, Maria; Diaz, Francesc; Choi, Soo Bong; Rotermund, Fabian; Park, Kyung Ho; Jeong, Mun Seok; Cascales, Concepcion (2011). Emission properties of hydrothermal Yb3+, Er3+and Yb3+, Tm3+-codoped Lu2O3nanorods: Upconversion, cathodoluminescence and assessment of waveguide behavior. Nanotechnology, 22(7), 075205-075205. DOI: 10.1088/0957-4484/22/7/075205
Article's DOI: 10.1088/0957-4484/22/7/075205
Entity: Universitat Rovira i Virgili
Journal publication year: 2011
Publication Type: Journal Publications
Repositori URV