Spectroscopic characterization of single-walled carbon nanotubes carrier-doped by encapsulation of TCNQ

Masashi Shiraishi; Sufal Swaraj; Taishi Takenobu; Yoshihiro Iwasa; Masafumi Ata; Wolfgang E S Unger

doi:10.1103/PhysRevB.71.125419

Spectroscopic characterization of single-walled carbon nanotubes carrier-doped by encapsulation of TCNQ

Masashi Shiraishi^*, Sufal Swaraj, Taishi Takenobu, Yoshihiro Iwasa, Masafumi Ata, Wolfgang E S Unger

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Tetracyano-p-quinodimethane (TCNQ) molecules encapsulated single-walled carbon nanotubes (SWNTs) were investigated by using core level and valence band x-ray photoemission spectroscopy as well as near-edge x-ray-absorption fine structure spectroscopy. The π-band and π*-band structures in these molecular systems were investigated, and it was clearly confirmed that a charge transfer occurred in TCNQ-doped SWNTs. TCNQ molecules were negatively charged as to be expected. A depletion of the π-band density of states of the SWNTs caused by the charge transfer to the TCNQ molecules was observed.

Original language	English
Article number	125419
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	71
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevB.71.125419
Publication status	Published - 2005 Mar 15
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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10.1103/PhysRevB.71.125419

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abstract = "Tetracyano-p-quinodimethane (TCNQ) molecules encapsulated single-walled carbon nanotubes (SWNTs) were investigated by using core level and valence band x-ray photoemission spectroscopy as well as near-edge x-ray-absorption fine structure spectroscopy. The π-band and π*-band structures in these molecular systems were investigated, and it was clearly confirmed that a charge transfer occurred in TCNQ-doped SWNTs. TCNQ molecules were negatively charged as to be expected. A depletion of the π-band density of states of the SWNTs caused by the charge transfer to the TCNQ molecules was observed.",

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AU - Shiraishi, Masashi

AU - Swaraj, Sufal

AU - Takenobu, Taishi

AU - Iwasa, Yoshihiro

AU - Ata, Masafumi

AU - Unger, Wolfgang E S

PY - 2005/3/15

Y1 - 2005/3/15

N2 - Tetracyano-p-quinodimethane (TCNQ) molecules encapsulated single-walled carbon nanotubes (SWNTs) were investigated by using core level and valence band x-ray photoemission spectroscopy as well as near-edge x-ray-absorption fine structure spectroscopy. The π-band and π*-band structures in these molecular systems were investigated, and it was clearly confirmed that a charge transfer occurred in TCNQ-doped SWNTs. TCNQ molecules were negatively charged as to be expected. A depletion of the π-band density of states of the SWNTs caused by the charge transfer to the TCNQ molecules was observed.

AB - Tetracyano-p-quinodimethane (TCNQ) molecules encapsulated single-walled carbon nanotubes (SWNTs) were investigated by using core level and valence band x-ray photoemission spectroscopy as well as near-edge x-ray-absorption fine structure spectroscopy. The π-band and π*-band structures in these molecular systems were investigated, and it was clearly confirmed that a charge transfer occurred in TCNQ-doped SWNTs. TCNQ molecules were negatively charged as to be expected. A depletion of the π-band density of states of the SWNTs caused by the charge transfer to the TCNQ molecules was observed.

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Spectroscopic characterization of single-walled carbon nanotubes carrier-doped by encapsulation of TCNQ

Abstract

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