Room: Park Tower 8216
Edgar Ibarra - University of California Berkeley
Co-Author(s): Juan Pablo Llinás, University of California Berkeley, Berkeley CA; Daniel Rizzo, University of California Berkeley, Berkeley CA. Michael F Crommie, University of California Berkeley, Berkeley CA
Graphene nanoribbons’ (GNRs) highly tunable edge-dependent electronic structures make them promising candidates for nanoelectronic device fabrication. However, reliable growth methods limit the availability of high-quality GNRs. Here, a bottom-up growth method of GNRs from DBBA (10,10′-dibromo-9,9′-bianthracene) precursor molecules under ultra-high vacuum (UHV) conditions is presented. Stability tests of synthesized GNRs after exposure to ambient conditions and thermal anneal are investigated. These conditions are present in real device fabrication processes, so it is important to understand GNRs stability under such conditions. Differences in coverage and average lengths of GNRs are verified with room temperature scanning tunneling microscopy (STM) studies. Once a high-yield reliable GNR recipe is discovered, we will explore the integration of GNRs into novel nanoelectronic device configurations.
Funder Acknowledgement(s): Department of Energy
Faculty Advisor: Michael F Crommie, firstname.lastname@example.org
Role: I prepared gold thin film sample plates and cleaned using a sputter and anneal process. I tested the dependence on temperature and time deposition on DBBA deposition. I performed STM imaging of GNRs. I trained Juan Pablo Llin's, a new graduate student, in STM operations.