E-MRS 2009 Spring Meeting SYMPOSIUM E

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E-MRS 2009 Spring Meeting
Strasbourg, France - June 8 – 12
SYMPOSIUM E
Metal Oxides Nanostructures: Synthesis Properties and Applications
Symposium Organizers:
Nicola Pinna, University of Aveiro, Portugal
Jean-François Hochepied, Mines Paris Tech, France
Markus Niederberger, ETH Zurich, Switzerland
Marty Gregg, Quen’s University of Belfast, U.K.
Published in themed issue of « Physical Chemistry Chemical Physics” PCCP
E: Metal Oxides Nanostructures: Synthesis Properties and Applications
The symposium will focus on the synthesis of metal oxides nanostructures, the study of their properties
and how they impact potential applications in the field of energy or environment. Because of the
multidisciplinary subject, the participation of diverse scientific communities is sought.
Scope:
Metal oxide nanostructures have attracted great interest due the large variety of physical properties they
present. Control of size, shape, surface, architecture and assembly properties of nanoscale materials are
crucial steps towards their study in fundamental research and their implementation in technological
devices.
The symposium will provide a platform for the presentation of state-of-the art physical and chemical
synthesis procedures that represent a step forward towards a rational design of metal oxide
nanostructures. Targeted advanced applications or physical properties are for example gas sensing,
(photo)catalysis, fuel cells, solar cells, optics, magnetic, electric, multiferroic, etc….
A keypoint will be the way surfaces and interfaces are controlled or modified: oxide-oxide, oxide-metal,
oxide-organic matter, oxide-liquid and oxide-gas. These interfaces generally control surface reactions
and/or charge transfers that are at the origin of outstanding properties. How performances are influenced
by architecture control at the nanolevel will be one of the main questions addressed by the contributions.
The symposium aims at covering a wide panel from experimental chemistry to analytical and theoretical
physics to promote exchange of views and ideas from different communities. In this context,
communications from various scientific communities will be welcome.
Hot topics to be covered by the symposium:
• Chemical and physical synthesis of metal oxide nanostructures including, for example:
- Solution based synthesis (e.g. hydrothermal, solvothermal, colloidal, etc.)
- Physical techniques (e.g. CVD, ALD, MBE, PLD, etc.)
• Physical properties of the resulting nanostructures including, for example:
- Magnetic
- Electric
- Multiferroic
- Optical
• Applications including, for example:
- Gas sensing based on metal oxides
- Fuel, Solar cells
- Catalysis and photocatalysis
- Batteries
- Data storage
The proceedings of the symposium "E" are replaced by a themed issue of "Physical Chemistry
Chemical Physics" PCCP, which will be distributed at the conference.
Invited Speakers (confirmed):
- Lennart Bergström (Stockholm, Sweden)
- Dietrich Hesse (Halle, Germany)
- Christel Laberty (Paris, France)
- Markku Leskela (Helsinki, Finland)
- Ramamoorthy Ramesh (Berkeley, USA)
-
Sabine Schlecht (Berlin, Germany)
Jean-Marc Triscone (Geneva, Switzerland)
Zhong Lin Wang (Atlanta, USA)
Udo Weimar (Tübingen, Germany)
Scientific Committee (confirmed):
- Markus Antonietti (Potsdam, Germany)
- Roberto Cingolani (Lecce, Italy)
- Claus Feldmann (Karlsruhe, Germany)
- Ulrich Goesele (Halle, Germany)
- Andrei Kholkin (Aveiro, Portugal)
- Luis M. Liz-Marzan (Vigo, Spain)
- Clement Sanchez (Paris, France)
Symposium organizers:
Nicola Pinna
Department of Chemistry and CICECO
University of Aveiro
Campus Universitario de Santiago
3810-193 Aveiro
Portugal
Tel: +351 911112114
Fax:+351 234370004
[email protected]
Jean-Francois Hochepied
Ecole des Mines de Paris
60 Bd Saint-Michel
75006 Paris
France
Tel: +33 1 40 51 91 16
Fax:+ 33 1 40 51 94 25
[email protected]
Markus Niederberger
Laboratory for Multifunctional Materials
Department of Materials
ETH Zurich
Wolfgang-Pauli-Strasse 10
8093 Zurich
Switzerland
Tel: +41 44 633 63 90
Fax:+41 44 632 11 01
[email protected]
Marty Gregg
Centre for Nanostructured Media
IRCEP
School of Maths & Physics
Quen's University of Belfast
Belfast BT7 1NN
UK
Tel: +44 (0)2890 973309
[email protected]
Symposium: E
Metal oxides nanostructures: synthesis properties and applications
08 June 2009 09 June 2009 10 June 2009 11 June 2009 12 June 2009
18:00 Effect of various impurities on sensitivity of indium oxide and tin oxide thinfilm
hydrogen gas sensors
Authors: S. H. Keshmiri1,2, M. B. Rahmani1, Z. Alavian1
1 Department of Physics, Faculty of Sciences, Ferdowsi University, Mashhad 91775-1436, Iran
2 Currently in sabbatical leave in Department of Materials Science, Surface Science Division, Darmstadt
University of Technology, Petersenstrasse 23, D-64287 Darmstadt, Germany
[email protected], [email protected], [email protected],
[email protected]
Resume: Indium oxide thin films were deposited by thermal evaporation and tin oxide samples by spray
hydrolysis technique. Glass slides were used as substrate. For indium oxide (IO) samples the impurity
layer was sandwiched between two IO layers in half part of the substrate; while, the other part consisted
of two layers of IO films only. For diffusion of impurity into IO, the substrates were then heat-treated in
air (at 500°C for 30 min.). Three bands of silver electrodes were evaporated onto the middle and end
sides of each slide. This way, the sensitivity of the doped and undoped IO sides could be compared with
one another. Effect of Sb, Se, Ni, Cr, and Cd impurities on sensitivity of IO samples to 2000 ppm
hydrogen gas (at the atmospheric pressure) was measured. The results showed that Ni and Se impurities
produced highest sensitivities (58.9% and 57.8% respectively). Tin oxide (TO) films were prepared by
spraying a tin chloride solution onto heated (480°C) substrates. For doped TO samples, a fixed amount of
the impurity chloride was added to the spray solution (in case of F doping, ammonium fluoride was used).
Effect of doping with Sb, Ni, Cd, Ag, Zn, Cu, In, and F impurities on sensitivity of TO gas sensors to 2000
ppm hydrogen gas was studied. For TO samples, In and Ag impurities produced the highest sensitivities
(20.5% and 20.3% respectively). The evaporated IO samples were generally more sensitive to hydrogen
gas, while the sprayed TO samples had higher longterm stability.
P3
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