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http://repositoriodigital.ipn.mx/handle/123456789/11025
Título : | Synthesis and characterization of nanostructured cerium dioxide thin films deposited by ultrasonic spray pyrolysis |
Palabras clave : | Cerium Dioxide Spray Pyrolysis Impedance Spectroscopy |
Fecha de publicación : | 16-ene-2013 |
Editorial : | WILEY |
Descripción : | Nanostructured thin films of cerium dioxide have been prepared
on single-crystalline silicon substrates by ultrasonic spray
pyrolysis using cerium acetylacetonate as a metal–organic precursor
dissolved in anhydrous methanol and acetic acid as an
additive. The morphology, structure, optical index, and electrical
properties were studied by X-ray diffraction, scanning electron
microscopy, atomic force microscopy, ellipsometry, and
impedance spectroscopy. The use of additives is very important
to obtain crack-free films. The substrate temperature and flow
rate was optimized for obtaining smooth (Ra <0.4 nm), dense
(n>2), and homogeneous nanocrystalline films with grain sizes
as small as 10 nm. The influence of thermal annealing on the
structural properties of films was studied. The low activation
energy calculated for total conductivity (0.133 eV) is attributed
to the nanometric size of the grains. Investigación INSTITUTO POLITECNICO NACIONAL |
URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/11025 |
Otros identificadores : | J. Am. Ceram. Soc., 93 [1] 155-160 0002-7820 http://hdl.handle.net/123456789/539 |
Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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2010-3 1.pdf | 86.19 kB | Adobe PDF | Visualizar/Abrir |
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