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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Solar Cell Silicon
Presentation Title Investigation on Quartz Crucibles for Monocrystalline Silicon Ingots for Solar Cells
Author(s) Marisa Di Sabatino, John A Bones
On-Site Speaker (Planned) John A Bones
Abstract Scope This study presents a new testing method to analyze the bubble content and distribution in quartz crucibles for monocrystalline silicon ingots. Two different types of silica (SiO2) crucibles have been investigated, before and after use during Czochralski (Cz) silicon ingot production for solar cells. Samples have been cut from three different positions along the crucible wall and then investigated by X-ray tomography, optical microscopy and scanning electron microscopy. The unused samples were heat-treated at 1400 C for 4 hours in Ar at 15 mbar. It is observed that the crucible bubbles grow in size and density during the Cz process. More bubbles are detected closer to the inner part of the crucible wall after use in the Cz-process. The results also indicate that there are some differences in quality between different crucible producers and that bubble formation and growth are significantly affected by the Cz process parameters, such as temperature and time.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Characterization of Composition, Morphology, and Structure of Disi Raw Sandstones in Jordan
Effect of Magnesium Addition on Removal of Impurities from Silicon by Hydrometallurgical Treatment
Electrodeposition of Solar Grade Silicon on Graphite in Molten CaCl2
Electrodynamic Eddy Current Separation of End-of-Life PV Materials
Evaporation Removal of Boron in Molten Silicon Using Reactive Fluxes
Influence of Oxygen Content on the Wettability of Silicon on Graphite
Investigation on Quartz Crucibles for Monocrystalline Silicon Ingots for Solar Cells
Particle Separation in Silicon Ingot Casting Using AC Magnetic Field
Phase Analysis of the Si-O2 System
Study on Producing Solar Grade Silicon by Carbothermal Reduction of Andalusite Ore
Study on the Segregation Behavior of Impurities during Solvent Refining Process
Topological Impurity Segregation at Faceted Silicon Grain Boundaries

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