About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Functional and Structural Thin Films and Coatings & Honorary Palkowski Session
|
Presentation Title |
J-1: Growth, Structure, Phase Stabilization and Optical Properties of Wide Band Gap Germanium Oxide Thin Films |
Author(s) |
Paul Nalam, Debabrata Das, Ramana Chintalapalle |
On-Site Speaker (Planned) |
Paul Nalam |
Abstract Scope |
Germanium oxide (GeO2), is a wide band gap metal oxide semiconductor, which exhibits exceptional thermal and optical properties. These properties offer tremendous potential for its application in next generation semiconductor electronics, optoelectronics and multifunctional devices. The current bottleneck in research of this material is lack in comprehensive understanding of this material for advanced applications due to the complexity of selective synthesis of a desired polymorph with controlled phase and properties. Here, we present an approach to successfully demonstrate nano-textured hexagonal and tetragonal phases of GeO2 film on Si substrates through a hybrid synthesis route, which involves film deposition by magnetron sputtering followed by post-deposition thermal oxidation. The resulting thin films exhibit exceptional optical band gaps at 6.21 eV for the α-quartz phase and 5.29 eV for the rutile phase. The evolution of h-GeO2 and t-GeO2 phases further analyzed using a variety of analytical methods to determine structural and functional properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Thin Films and Interfaces, Ceramics, Characterization |