Development of the pn junction using Pd induced graphene

2016 Fiscal Year Final Research Report

• Project/Area Number: 26870782
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Thin film/Surface and interfacial physical properties; Nanostructural physics
• Research Institution: Fukuoka University
• Principal Investigator: Yagyu Kazuma 福岡大学, 工学部, 助教 (90609471)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: グラフェン / SiC / パラジウム / インターカレーション

Outline of Final Research Achievements

Palladium atoms were intercalated between the zero layer graphene grown on the SiC(0001) surface and the substrate. Then its structure and electron states were studied. After the deposition of Pd atoms on the zero layer, Pd atoms were intercalated during the annealing above 700 degrees Celsius. A Dirac cone appeared at the K bar point after the intercalation of Pd atoms. In other words, the zero layer became electrically an ideal graphene because of the intercalation of Pd atoms. The Dirac point is located at the Fermi energy, which indicates that the graphene on the intercalated Pd atoms is electrically neutral. However, it was turned out that a charge transfer occurred between the Pd atoms and the SiC substrate.

Free Research Field

表面物理