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Charge transfer and gap states in semiconducting nanopeapods: a theoretical study
- Charge transfer and gap states in semiconducting nanopeapods: a theoretical study
- Han, SW
- Ewha Authors
- SCOPUS Author ID
- Issue Date
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY vol. 44, no. 4, pp. 894 - 898
- nano-peapod; fullerene; electronic structure; nanotube
- KOREAN PHYSICAL SOC
- SCI; SCIE; SCOPUS; KCI
- Document Type
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- The electronic structures of nanopeapods that consist of a semiconducting nanotube and various fullerenes, such as C-60, C-82, La@C-60, and La@C-82 are investigated using a first-principles method. For all the systems studied, molecular states originating from fullerenes are found within the energy gap of the semiconducting nanotube, often resulting in effective hole doping of nanotubes as the Fermi level shifts. In the case where C-60 and La@C-60 are encapsulated, a rigid band model considering the work function of each constituent explains the band structure of the full system. The charge redistribution in nanopeapods with C-82 and La@C-82, on the other hand, leads to a rigid shift of fullerene bands.
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