Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Colossal Ionic Conductivity at Interfaces of Epitaxial ZrO2:Y2O3/SrTiO3 Heterostructures
Year:2008
Research Areas
  • Electronics engineering
Information
Abstract
The search for electrolyte materials with high oxygen conductivities is a key step toward reducing the operation temperature of fuel cells, which is currently above 700°C. We report a high lateral ionic conductivity, showing up to eight orders of magnitude enhancement near room temperature, in yttria-stabilized zirconia (YSZ)/strontium titanate epitaxial heterostructures. The enhancement of the conductivity is observed, along with a YSZ layer thickness–independent conductance, showing that it is an interface process. We propose that the atomic reconstruction at the interface between highly dissimilar structures (such as fluorite and perovskite) provides both a large number of carriers and a high-mobility plane, yielding colossal values of the ionic conductivity
International
Si
JCR
Si
Title
SCIENCE
ISBN
0036-8075
Impact factor JCR
26,372
Impact info
Volume
321
10.1136
Journal number
5839
From page
676
To page
680
Month
ENERO
Ranking
Participants
  • Autor: Enrique Iborra Grau (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Microsistemas y Materiales Electrónicos
  • Departamento: Tecnología Electrónica
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Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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