Study of Electrical Properties of Nanoparticle-Decorated Graphene Devices
Student: Abayomi Omolewu
Degree: Ph.D., December 2021
Major Professor: Dr. Uche Wejinya & Dr. Ryan Tian
Research Area(s):
Microelectronic Materials & Devices
Nanoscale Materials & Devices
Background/Relevance
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Demand for cleaner and more sustainable form of energy is driving research towards alternative energy sources and carrier.
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Hydrogen is one of the promising alternative energy carrier.
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Hydrogen is colorless, odorless, and has high tendency of leakage. Hence there is need for development of hydrogen gas sensors that meet DoE requirements.
Innovation
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Find correlation between hydrogen sensor parameters for synthesized nanoparticle decorated graphene and electron transport measurements.
Approach
- Graphene device done through mechanical exfoliation and e-beam lithography.
- Hall measurement carried for the longitudinal and hall resistance of the device to extract carrier density and carrier mobility
Key Results
- Device fabrication and electrical characterizations of graphene hall bars on HBN and CdPS3 as substrates.
Conclusions
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The electrical properties of the sample when extracted will help will the characterization of nano-particle decorated graphene on future
Future Work
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More electronic transport measurement for fabricated devices
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More AFM analysis of SDS functionalized CVD graphene
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Fabrication of device from Pd/Pt decorated graphene