Synthesis of nanocrystalline ceria thin films by low-temperature thermal decomposition of Ce-propionate

P. Roura; J. Farjas; S. Ricart; M. Aklalouch; R. Guzman; J. Arbiol; T. Puig; A. Calleja; O. Peña-Rodríguez; M. Garriga; X. Obradors

doi:10.1016/j.tsf.2011.09.058

Synthesis of nanocrystalline ceria thin films by low-temperature thermal decomposition of Ce-propionate

P. Roura, J. Farjas, S. Ricart, M. Aklalouch, R. Guzman, J. Arbiol, T. Puig, A. Calleja, O. Peña-Rodríguez, M. Garriga, X. Obradors

Research output: Contribution to journal › Article › Research › peer-review

28 Citations (Scopus)

Abstract

Thin films of Ce-propionate (thickness below 20 nm) have been deposited by spin coating and pyrolysed into ceria at temperatures below 200 °C. After 1 h of thermal treatment, no signature of the vibrational modes of Ce-propionate is detected by infrared spectroscopy, indicating that decomposition has been completed. The resulting ceria films are nanocrystalline as revealed by X-ray diffraction (average grain size of 2-2.5 nm) and confirmed by microscopy. They are transparent in the visible region and show the characteristic band gap absorption below 400 nm. A direct band gap energy of 3.50 ± 0.05 eV has been deduced irrespective of the pyrolysis temperature (160, 180 and 200 °C). © 2011 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	1949-1953
Journal	Thin Solid Films
Volume	520
Issue number	6
DOIs	https://doi.org/10.1016/j.tsf.2011.09.058
Publication status	Published - 1 Jan 2012

Keywords

Ceria
Cerium propionate
Crystal microstructure
Optical absorption
Pyrolysis
Thermal decomposition
Thermogravimetry

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@article{9e4609d31a2a4c69b9a0beaa72e3a7b5,

title = "Synthesis of nanocrystalline ceria thin films by low-temperature thermal decomposition of Ce-propionate",

abstract = "Thin films of Ce-propionate (thickness below 20 nm) have been deposited by spin coating and pyrolysed into ceria at temperatures below 200 °C. After 1 h of thermal treatment, no signature of the vibrational modes of Ce-propionate is detected by infrared spectroscopy, indicating that decomposition has been completed. The resulting ceria films are nanocrystalline as revealed by X-ray diffraction (average grain size of 2-2.5 nm) and confirmed by microscopy. They are transparent in the visible region and show the characteristic band gap absorption below 400 nm. A direct band gap energy of 3.50 ± 0.05 eV has been deduced irrespective of the pyrolysis temperature (160, 180 and 200 °C). {\textcopyright} 2011 Elsevier B.V. All rights reserved.",

keywords = "Ceria, Cerium propionate, Crystal microstructure, Optical absorption, Pyrolysis, Thermal decomposition, Thermogravimetry",

author = "P. Roura and J. Farjas and S. Ricart and M. Aklalouch and R. Guzman and J. Arbiol and T. Puig and A. Calleja and O. Pe{\~n}a-Rodr{\'i}guez and M. Garriga and X. Obradors",

year = "2012",

month = jan,

day = "1",

doi = "10.1016/j.tsf.2011.09.058",

language = "English",

volume = "520",

pages = "1949--1953",

journal = "Thin Solid Films",

issn = "0040-6090",

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}

Synthesis of nanocrystalline ceria thin films by low-temperature thermal decomposition of Ce-propionate. / Roura, P.; Farjas, J.; Ricart, S.; Aklalouch, M.; Guzman, R.; Arbiol, J.; Puig, T.; Calleja, A.; Peña-Rodríguez, O.; Garriga, M.; Obradors, X.

In: Thin Solid Films, Vol. 520, No. 6, 01.01.2012, p. 1949-1953.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Synthesis of nanocrystalline ceria thin films by low-temperature thermal decomposition of Ce-propionate

AU - Roura, P.

AU - Farjas, J.

AU - Ricart, S.

AU - Aklalouch, M.

AU - Guzman, R.

AU - Arbiol, J.

AU - Puig, T.

AU - Calleja, A.

AU - Peña-Rodríguez, O.

AU - Garriga, M.

AU - Obradors, X.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - Thin films of Ce-propionate (thickness below 20 nm) have been deposited by spin coating and pyrolysed into ceria at temperatures below 200 °C. After 1 h of thermal treatment, no signature of the vibrational modes of Ce-propionate is detected by infrared spectroscopy, indicating that decomposition has been completed. The resulting ceria films are nanocrystalline as revealed by X-ray diffraction (average grain size of 2-2.5 nm) and confirmed by microscopy. They are transparent in the visible region and show the characteristic band gap absorption below 400 nm. A direct band gap energy of 3.50 ± 0.05 eV has been deduced irrespective of the pyrolysis temperature (160, 180 and 200 °C). © 2011 Elsevier B.V. All rights reserved.

AB - Thin films of Ce-propionate (thickness below 20 nm) have been deposited by spin coating and pyrolysed into ceria at temperatures below 200 °C. After 1 h of thermal treatment, no signature of the vibrational modes of Ce-propionate is detected by infrared spectroscopy, indicating that decomposition has been completed. The resulting ceria films are nanocrystalline as revealed by X-ray diffraction (average grain size of 2-2.5 nm) and confirmed by microscopy. They are transparent in the visible region and show the characteristic band gap absorption below 400 nm. A direct band gap energy of 3.50 ± 0.05 eV has been deduced irrespective of the pyrolysis temperature (160, 180 and 200 °C). © 2011 Elsevier B.V. All rights reserved.

KW - Ceria

KW - Cerium propionate

KW - Crystal microstructure

KW - Optical absorption

KW - Pyrolysis

KW - Thermal decomposition

KW - Thermogravimetry

U2 - 10.1016/j.tsf.2011.09.058

DO - 10.1016/j.tsf.2011.09.058

M3 - Article

VL - 520

SP - 1949

EP - 1953

JO - Thin Solid Films

JF - Thin Solid Films

SN - 0040-6090

IS - 6

ER -