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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Alloys and Compounds for Thermoelectric and Solar Cell Applications VI
Presentation Title Thin Film Heusler Systems: Boosting ZT
Author(s) Ernst Bauer, Bernhard Hinterleitner, Igor Knapp, Michael Poneder, Mathieu Taupin, Christoph Eisenmenger-Sittner, Christian Nöbauer
On-Site Speaker (Planned) Ernst Bauer
Abstract Scope Fe2VAl-based Heusler systems are promising thermoelectric materials for temperatures from 70 to 300°C due to their large power factor. Thin film samples of these alloys reduce the thermal conductivity in comparison with the bulk material, ZT values greater than 1 are expected. Throughout this work different mol fractions of iron and/or vanadium are exchanged by other metals to boost the ZT of the bulk material. The best compositions are then used for the thin film preparation via magnetron sputtering. As substrate undoped silicon was used. For better adherence it was sputter etched and heated to different temperatures during the sputtering process. The finished film is then heat treated to heal crystal defects. For a single bulk sample, several thin films were made at different conditions. All these parameters influences thermoelectric properties. Under the best conditions the power factor increased by ten times with respect to the bulk material.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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Controlling Stoichiometry, Defects, and Interfaces in Epitaxial Heusler Compounds: a Multifunctional Thermoelectrics Platform
Determination of the Mg-Si-Sn Ternary Phase Diagram to Evaluate Phase Stability of Thermoelectric Mg2(Si,Sn) Compound
Effect of Magnetic Ion Doping on the Thermoelectric Properties of Zintl Phase Materials
Effect of Oxygen on the Doping Mechanisms of Thermoelectric Materials via Ab Initio Simulations: Application to ZnSb and NiTiSn.
Effect of Precipitates on Thermoelectric Properties in Nickel Based Alloy
Effect of the Processing Method on the Thermoelectric Properties of Mg2(Si,Sn,Ge) Materials
Enhanced Thermoelectric Properties in a Printed Material
Enhancement of the Thermoelectric Properties of FeGa3–type Structures with Group 6 Transition Metals: A Computational Exploration
Enhancement of Thermoelectric Performance Through Optimization of Hot-pressing Parameters in the Gas Atomized Bi0.5Sb1.5Te3 Alloys
Evaluation of Co-P Diffusion Barrier for p-Bi2Te3 Thermoelectric Material
Evaluation of Interfacial Stability of PbTe Thermoelectric Module
Half Heuslers: Promising Mid-to-high Temperature Thermoelectric Alloys
Hierarchical Control of Microstructure in Fe-Si-Ge Based Thermoelectric Alloys to Control Thermal Boundary Conductance
High-performance Oxides-based Thermoelectric Ceramics for Energy Conversion
High Thermoelectric Figure-of-merit in n-type Ga-incorporated PbTe
Improved Thermoelectric Properties of Bismuth-magnesium Eutectic Alloy by Melt Spinning and Spark Plasma Sintering
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Low Dimensional Insulator-conductor Nanocomposites and their Thermoelectric Properties
Low Thermal Conductivity and Stacking Faults in Layered Selenides: Ba4Cu8Se13 and InGeTe3
MIP Infrastructure and High-throughput Study on Diamond-like Thermoelectric Chalcogenides
Molecular-dynamics Simulations of Liquid-like Copper Diffusion in Copper Chalcogenides
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Novel Synthesis and Optimization of Half-Heusler Materials for Thermoelectric Applications
Optimization of Thermoelectric Performance for SnTe Alloys and Simulation of the TEG Module with Single SnTe Legs
Phase Boundary Mapping for the Discovery and Optimization of Thermoelectric Materials
Phase Diagram of Ag-In-Se System and Thermoelectric Properties of In-containing Ag2Se
Phase Diagrams Evaluation for Design of Thermoelectric Materials and Development of Fabrication Processes
Phase Diagrams of Ternary Zn-Sb-In Systems and Thermoelectric Properties of In Doped Zn4Sb3
Phase Diagrams of Ternary Zn-Sb-In Systems and Thermoelectric Properties of (Cu, In)-doped Zn4Sb3 Doped Zn4Sb3
Phonon Scattering and Propagation Considerations for Thermoelectrics
Phonon Spectroscopy and Elasticity in Thermoelectric Mg2Si1-xSnx
Prediction of Thermoelectric Transport Properties in Layered Complex Nitrides
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Room Temperature Orientation-dependent Thermal Conductivity of Thermoelectric SnSe
Structure/Property Relationships of Thermoelectric Oxyselenides Bi1-xAxOCuSe (A=Ba, Sr, Ca, and Pb)
Study of Cobalt Silicide by Grain Boundary Engineering
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The Phase Diagram of Ge-Te-Sb and Enhanced Thermoelectric Properties of Sb-doped GeTe
The Phase Diagram of Ge-Te-Sb and Enhanced Thermoelectric Properties of (Sb, In)-doped GeTe
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