Factors controlling the microstructure of Ce0.9Gd0.1O2-δ films in pulsed laser deposition process

Publication: Research - peer-reviewJournal article – Annual report year: 2010

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Factors controlling the microstructure of Ce0.9Gd0.1O2-δ films in pulsed laser deposition process. / Rodrigo, Katarzyna Agnieszka; Heiroth, S.; Döbeli, M.; Pryds, Nini; Linderoth, Søren; Schou, Jørgen; Lippert, T.

In: Journal of Optoelectronics and Advanced Materials, Vol. 12, No. 3, 2010, p. 511-517.

Publication: Research - peer-reviewJournal article – Annual report year: 2010

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Rodrigo, Katarzyna Agnieszka; Heiroth, S.; Döbeli, M.; Pryds, Nini; Linderoth, Søren; Schou, Jørgen; Lippert, T. / Factors controlling the microstructure of Ce0.9Gd0.1O2-δ films in pulsed laser deposition process.

In: Journal of Optoelectronics and Advanced Materials, Vol. 12, No. 3, 2010, p. 511-517.

Publication: Research - peer-reviewJournal article – Annual report year: 2010

Bibtex

@article{fded7c0f2c944f65bded817256e3f4cb,
title = "Factors controlling the microstructure of Ce0.9Gd0.1O2-δ films in pulsed laser deposition process",
keywords = "Solid Oxide Fuel Cells, Fuel Cells and hydrogen, Gadolnia-doped ceria, Pulsed laser deposition, Low temperature deposition, Stress, Brændselsceller og brint",
publisher = "Institutul National de Cercetare-Dezvoltare pentru Optoelectronica",
author = "Rodrigo, {Katarzyna Agnieszka} and S. Heiroth and M. Döbeli and Nini Pryds and Søren Linderoth and Jørgen Schou and T. Lippert",
year = "2010",
volume = "12",
number = "3",
pages = "511--517",
journal = "Journal of Optoelectronics and Advanced Materials",
issn = "1454-4164",

}

RIS

TY - JOUR

T1 - Factors controlling the microstructure of Ce0.9Gd0.1O2-δ films in pulsed laser deposition process

A1 - Rodrigo,Katarzyna Agnieszka

A1 - Heiroth,S.

A1 - Döbeli,M.

A1 - Pryds,Nini

A1 - Linderoth,Søren

A1 - Schou,Jørgen

A1 - Lippert,T.

AU - Rodrigo,Katarzyna Agnieszka

AU - Heiroth,S.

AU - Döbeli,M.

AU - Pryds,Nini

AU - Linderoth,Søren

AU - Schou,Jørgen

AU - Lippert,T.

PB - Institutul National de Cercetare-Dezvoltare pentru Optoelectronica

PY - 2010

Y1 - 2010

N2 - Films of Ce0.9Gd0.1O2-delta (CGO10) are prepared at a range of conditions by pulsed laser deposition (PLD) on a single crystal Si (100) and MgO (100), and on a polycrystalline Pt/MgO (100) substrate. The relationship between the film microstructure, crystallography, chemical composition and PLD processing parameters is studied. It is found that the laser fluence has no significant impact on the film density, whereas the substrate temperature and the oxygen pressure are of essential importance for the film microstructure development. The reduction of deposition temperature, down to 250 oC, together with a lowered oxygen pressure of 0.05 mbar, significantly inhibits the growth of columnar structures. Further decrease in oxygen pressure, to 0.005 mbar, promotes films densification, but a stress build-up is observed and leads to a lattice-parameter enlargement of the coatings. The chemical films composition is affected by the applied fluence. At a low fluence, 0.5 J/cm², a congruent transfer is obtained while a relative Gd enrichment results for substantially higher (3.5-5.5 J/cm²).

AB - Films of Ce0.9Gd0.1O2-delta (CGO10) are prepared at a range of conditions by pulsed laser deposition (PLD) on a single crystal Si (100) and MgO (100), and on a polycrystalline Pt/MgO (100) substrate. The relationship between the film microstructure, crystallography, chemical composition and PLD processing parameters is studied. It is found that the laser fluence has no significant impact on the film density, whereas the substrate temperature and the oxygen pressure are of essential importance for the film microstructure development. The reduction of deposition temperature, down to 250 oC, together with a lowered oxygen pressure of 0.05 mbar, significantly inhibits the growth of columnar structures. Further decrease in oxygen pressure, to 0.005 mbar, promotes films densification, but a stress build-up is observed and leads to a lattice-parameter enlargement of the coatings. The chemical films composition is affected by the applied fluence. At a low fluence, 0.5 J/cm², a congruent transfer is obtained while a relative Gd enrichment results for substantially higher (3.5-5.5 J/cm²).

KW - Solid Oxide Fuel Cells

KW - Fuel Cells and hydrogen

KW - Gadolnia-doped ceria

KW - Pulsed laser deposition

KW - Low temperature deposition

KW - Stress

KW - Brændselsceller og brint

JO - Journal of Optoelectronics and Advanced Materials

JF - Journal of Optoelectronics and Advanced Materials

SN - 1454-4164

IS - 3

VL - 12

SP - 511

EP - 517

ER -