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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Solar Cell Silicon
Presentation Title Combustion Synthesis of Nanostructured Silicon
Author(s) Sergio Cordova, Evgeny Shafirovich
On-Site Speaker (Planned) Sergio Cordova
Abstract Scope Nanoscale silicon (Si) is a promising material for many advanced technologies such as batteries, thermoelectrics, and solar cells. However, the current methods for fabricating this material are expensive, complex, and are difficult to scale up. The present work focuses on using mechanically activated self-propagating high-temperature synthesis (MASHS) of nanosilicon using silica (SiO2) and magnesium silicide (Mg2Si) as the precursors. During mechanical activation, SiO2 and Mg2Si are ball-milled together for a short time. Then the mixture is compacted and ignited, which results in a self-sustained propagation of the combustion wave over the sample leading to the formation of nanosilicon and magnesia. The magnesia is leached in diluted hydrochloric acid. Also, the addition of sodium chloride (NaCl) to the mixture, decreases combustion temperature and particle size of the formed Si.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


Combustion Synthesis of Nanostructured Silicon
Dislocation-based Thermodynamic Models of V-pits Formation and Strain Relaxation in InGaN/GaN Epilayers on Si Substrates
First Principles Modeling of Water-induced Polymer Encapsulant Degradation in Silicon Modules
Molten Salt Electrolysis Production of Solar Silicon from Natural Quartzite
Phase Diagrams of the Si-P Binary System
Thermo-calc Determination of the Phase Diagram of Si-B Binary System
Thermodynamic Properties of Si-P Binary System
Using Thermo-calc Software to Deduce the Thermodynamic Properties of Si-B Binary System
Zr Addition for Enhanced B Removal from Si by Si-Cu Solvent Refining

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