What question did this study set out to answer?

To examine the real-time growth dynamics and electronic structure of monolayer graphene synthesized on palladium surfaces.

September 28, 2009Nano Letters

Growth of Semiconducting Graphene on Palladium

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Authors

SKSoon‐Yong KwonUlsan National Institute of Science and Technology CCCristian V. CiobanuColorado School of Mines VSVivek B. ShenoyUniversity of Pennsylvania

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Implication

In situ microscopy analysis reveals band gap opening in graphene on palladium substrates, suggesting direct pathways for carbon-based nanoelectronics.

Key Points

To examine the real-time growth dynamics and electronic structure of monolayer graphene synthesized on palladium surfaces.
Conducted in situ scanning tunneling microscopy (STM) during ethylene exposure on Pd(111) at temperatures ranging from 723 to 1023 K.
Characterized electronic properties using scanning tunneling spectroscopy (STS) and density functional theory (DFT) calculations.
Monolayer graphene grew as discrete islands sized 200 to 2000 Å bounded by palladium steps, exhibiting bias-dependent STM image contrast reversal.
Scanning tunneling spectroscopy demonstrated that the synthesized graphene islands are semiconducting with an energy band gap of 0.3 ± 0.1 eV.
Density functional theory calculations attributed the observed band gap opening to strong electronic interaction between graphene and the underlying palladium substrate.

Cite This Study

Kwon et al. (2009) studied this question.

synapsesocial.com/papers/6a841f5ce22b852b8ec52508 https://doi.org/10.1021/nl902140j

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Implication

In situ microscopy analysis reveals band gap opening in graphene on palladium substrates, suggesting direct pathways for carbon-based nanoelectronics.

Growth of Semiconducting Graphene on Palladium

Discussion

Member takes

Implication

Key Points

Cite This Study

Growth of Semiconducting Graphene on Palladium

Discussion

Member takes

Implication

Key Points

Cite This Study

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