About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
2022 Undergraduate Student Poster Contest
|
Presentation Title |
Investigation of Glasses and Glass-Ceramics Formed in the Ga2O3-B2O3 Binary |
Author(s) |
John M. Bussey, Benjamin Dutton, Kevin Grogan, John S. McCloy |
On-Site Speaker (Planned) |
John M. Bussey |
Abstract Scope |
Gallium oxide (β-Ga2O3) is an ultrawide bandgap semiconductor material with applications in high powered electronics, sensors, and optoelectronic devices. During Czochralski crystal growth of β-Ga2O3, volatilization of components is a critical concern when attempting to control dopant composition and crystal quality. Liquid encapsulation (LEC) with B2O3 (a layer of molten B2O3 over the Ga2O3 melt) is a potential solution. One concern with LEC is that interactions between Ga2O3 and B2O3 are poorly understood, and B2O3 could potentially contaminate the Ga2O3 melt. This study examines the Ga2O3-B2O3 binary series of quenched glasses and heat-treated glass-ceramics to illuminate the relationship of Ga2O3 and B2O3 in a melt. X-ray diffraction (XRD), optical microscopy, Raman spectroscopy, and other characterization techniques are utilized to understand the resulting glass structures, including phase separation and crystallization. Crystal structures and formation processes are discussed. As such, this study informs the viability of LEC of β-Ga2O3. |