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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Alloys and Compounds for Thermoelectric and Solar Cell Applications VIII
Presentation Title Optimizing Power Factor in Rare Earth-free CoSb3-Skutterudite Thin Films
Author(s) Cedric Bourges, Isao Ohkubo, Naohito Tsujii, Takao Mori
On-Site Speaker (Planned) Cedric Bourges
Abstract Scope In the present study, we have focused on the elaboration of control CoSb3 thin films by magnetron sputtering which is an attractive technique for industrial development of thermoelectric (TE) thin films. We have successfully synthesized sputtering targets with a reliable approach in order to obtain high-quality films with control stoichiometry. TE properties were then probed and revealed a reliable n-type behavior characterized by poor electrical transport properties. Telluride substitution was realized by co-sputtering deposition and allowed to obtain a significant enhancement of the power factor with promising values of PF ≈ 0.3-0.5 mW/m.K2 near room temperature. It is related to the Te doping effect which leads to an increase of the Seebeck coefficient and the electrical conductivity simultaneously. However, despite this large improvement, the properties remained far from the bulk material and further development are engaged to improve the carrier mobility reduced by the thin film formatting.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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Ab initio Calculations of Thermoelectric Materials
Accelerated Discovery of Efficient Solar-cell Materials using Quantum and Machine-learning Methods
Approaches to Manipulate p-n Conduction Transition and High Thermoelectric Performance in Ga-incorporated Bi2Te3
Assessment of Interface in Bi2Te3 and Sb2Te3 Thin Film Thermoelectric Modules
Black Phosphorus and Semiconducting Transition Metal Dichalcogenides in Contact with Transparent Conductive Oxides for High Efficiency Solar Cells
Current Progress on Fabrication and Life Testing of Advanced Skutterudite Thermoelectric Materials in a Proposed Enhanced Multi-mission Radioisotope Thermoelectric Generator (eMMRTG) for Space Power Applications
D-4: Assessment of Co-P Diffusion Barrier for Bismuth Telluride-based Thermoelectric Materials
D-6: Phase Diagram of Bi-Cu-Te and Thermoelectric Properties of Cu Doped Bi2Te3 Alloys
D-7: Phase Diagrams of Ag-Pb-Sn-Te System
D-8: Realizing the Microstructure in GeTe-based Thermoelectric Materials and Phase Transition Behavior
D-9: Thermoelectric Properties of Multiply Doped Mg3(Sb, Bi)2
Defect Formation Energies and Effective Masses in the Mg2(Si,Sn) Solid Solutions via DFT Calculations
Enhanced Averaged zT in n-type Bi2Te3 via Solubility Control
Gradient Composition Layered Microstructure Development in Thermoelectric Mg2(Si,Sn) Alloys Based on Phase Equilibrium
Heat Stability of Mg2Si1-xSnx as Affected by Heat Treatment Temperature and Duration
High Reliability Package of Perovskite Solar Cell by SiNx Passivation Layer with Sn-Bi-In Low-melting Solder
Interfacial Reactions Between Bi2Te3 Substrate with Cu, In, Sn and Ni
Laser Additive Manufacturing of Bismuth Telluride and Silicide Thermoelectric Materials
Lattice Hardening Due to Vacancy Diffusion in (GeTe)mSb2Te3 Alloys
Minor Ga Addition in β-Zn4Sb3 Leads to Major Enhancement in Thermoelectric Performance
Multi-band Electronic and Thermal Transport in Fe2VAl Based Full Heusler Thin Films
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Optimization of Thermoelectric Performance of Nitrogen- and Boron-doped Carbon Nanotubes
Optimizing Power Factor in Rare Earth-free CoSb3-Skutterudite Thin Films
Phase Diagrams of Ag-Cu-Te Ternary System and Ag2Te/Cu Interfacial Reaction
Polar Tintermetallics as High Temperature Thermoelements
Portable Nanostructured Magneto-Thermoelectric Bi-Sb Alloys at Cryogenic Temperatures
Realizing the Compositional Homogeneity in GeTe-based Thermoelectric Materials and Phase Transition Behavior
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Synthesis, Processing and Characterizations of Functional Materials for Industrial Applications
Thermal Storage Effect on Thermoelectric Module
Thermoelectric Films Deposited by Pulsed Magnetron Sputtering
Thermoelectric Half Heusler Systems {Nb,Ta}FeSb - Ti1+xFe1.33-xSb
Thermoelectric Properties of p-type Mg Doped CuMO2 Delafossite Thin Films and Modules
Transmission Electron Microscopy Study of Hole-selective Contacts Employed in Silicon Solar Cells
Using Energy Filtering to Change the Thermoelectric Design Paradigm
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