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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.19 SNIP: 0.341 CiteScore™: 0.43

ISSN Печать: 1093-3611
ISSN Онлайн: 1940-4360

Выпуски:
Том 23, 2019 Том 22, 2018 Том 21, 2017 Том 20, 2016 Том 19, 2015 Том 18, 2014 Том 17, 2013 Том 16, 2012 Том 15, 2011 Том 14, 2010 Том 13, 2009 Том 12, 2008 Том 11, 2007 Том 10, 2006 Том 9, 2005 Том 8, 2004 Том 7, 2003 Том 6, 2002 Том 5, 2001 Том 4, 2000 Том 3, 1999 Том 2, 1998 Том 1, 1997

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v10.i3.70
pages 431-444

OPTICAL EMISSION SPECTROSCOPY OF A SUPERSONIC LOW-PRESSURE PLASMA REACTOR USED TO SYNTHESIS SOFC CATHODES THIN LAYERS

F. Rousseau
Laboratoire de Génie des Procédés Plasmas et Traitement de Surface − Université Pierre et Marie Curie − Paris 6 - ENSCP, 11, rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
M. Nickravech
Laboratoire de Génie des Procédés Plasmas et Traitement de Surface − Université Pierre et Marie Curie − Paris 6 - ENSCP, 11, rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
S. Awamat
Laboratoire de Génie des Procédés Plasmas et Traitement de Surface − Université Pierre et Marie Curie − Paris 6 - ENSCP, 11, rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
Daniel Morvan
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France
Jacques Amouroux
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France

Краткое описание

A low pressure plasma reactor equipped with a supersonic nozzle was employed to synthesize thin perovskite layers La1-xSrx(Mn, Co)O3±δ on the Solid Oxide Fuel Cell (SOFC) electrolyte from a solution containing nitrates. To determine the role of plasma species in transformation of nitrates into perovskite, Optical Emission Spectroscopy (OES) measurements have been performed on the Ar/O2 discharge during the deposition. At each injection of nitrates precursors, OES have detected species such as Ar*, O from the dissociation of O2, and OHº from the decomposition of water. The electronic temperature (2.5 eV), the excitation temperature of Ar (8900 K) and the rotational temperature of OHº (360 K) have been measured. The results have confirmed that the nitrates are transformed mainly by oxidization reactions at low temperature using O and OHº. This plasma process allows a thin perovskite layer formation without undesirable phases (La(OH)3...), that are generally produced in thermal processes.


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