Sol-gel route to porous lanthanum cobaltite (LaCoO3) thin films

Hae Jin Hwang, Jooho Moon, Masanobu Awano, Kunihiko Maeda

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Sol-gel-derived LaCoO3 thin films were deposited on yttria-stabilized zirconia (YSZ) substrates from a lanthanum isopropoxide-cobalt acetate (with 2-methoxyethanol) precursor solution. A chelating agent (2-ethylacetoacetate) and polyethylene glycol (PEG) were used to modify the above-mentioned precursor solution. The La-Co precursor solution was sufficiently viscous, and transparent LaCoO3 gel films were prepared successfully using a spin-coating technique. Crystallization behavior and microstructure evolution were investigated using X-ray diffractometry (XRD) and scanning electron microscopy (SEM). A single-phase perovskite thin film with the grain size of approximately 50 nm was obtained by heat-treating the spin-coated gel film at a temperature of 600 °C. SEM observations revealed that the microstructure of LaCoO3 thin films that were prepared from the precursor solution with PEG was porous, and the LaCoO3 thin film maintained its porous microstructure to a temperature of 800 °C.

Original languageEnglish
Pages (from-to)2852-2854
Number of pages3
JournalJournal of the American Ceramic Society
Volume83
Issue number11
Publication statusPublished - 2000 Jan 1

Fingerprint

cobaltite
Lanthanum
Sol-gels
gel
Thin films
Microstructure
Polyethylene glycols
microstructure
Gels
Scanning electron microscopy
Coating techniques
Yttria stabilized zirconia
Spin coating
Chelating Agents
Chelation
Crystallization
Cobalt
scanning electron microscopy
Perovskite
X ray diffraction analysis

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Hwang, Hae Jin ; Moon, Jooho ; Awano, Masanobu ; Maeda, Kunihiko. / Sol-gel route to porous lanthanum cobaltite (LaCoO3) thin films. In: Journal of the American Ceramic Society. 2000 ; Vol. 83, No. 11. pp. 2852-2854.
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Hwang, HJ, Moon, J, Awano, M & Maeda, K 2000, 'Sol-gel route to porous lanthanum cobaltite (LaCoO3) thin films', Journal of the American Ceramic Society, vol. 83, no. 11, pp. 2852-2854.

Sol-gel route to porous lanthanum cobaltite (LaCoO3) thin films. / Hwang, Hae Jin; Moon, Jooho; Awano, Masanobu; Maeda, Kunihiko.

In: Journal of the American Ceramic Society, Vol. 83, No. 11, 01.01.2000, p. 2852-2854.

Research output: Contribution to journalArticle

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T1 - Sol-gel route to porous lanthanum cobaltite (LaCoO3) thin films

AU - Hwang, Hae Jin

AU - Moon, Jooho

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