Band gap modulation of a carbon nanotube by hydrogen functionalization

Keun Soo Kim; Kyung Ah Park; Hyun Jin Kim; Dong Jae Bae; Seong Chu Lim; Young Hee Lee; Jae Ryong Kim; Ju Jin Kim; Won Bong Choi

Band gap modulation of a carbon nanotube by hydrogen functionalization

Keun Soo Kim
, Kyung Ah Park
, Hyun Jin Kim
, Dong Jae Bae
, Seong Chu Lim
, Young Hee Lee
, Jae Ryong Kim
, Ju Jin Kim
, Won Bong Choi

Sungkyunkwan University
Jeonbuk National University
Samsung

Research output: Contribution to journal › Conference article › peer-review

20 Scopus citations

Abstract

We have investigated a modification of electronic structures of a carbon nanotube by hydrogen functionalization. Carbon nanotubes were exposed to atomic hydrogen which was generated by a hot tungsten filament in the vacuum chamber. Current-voltage characteristics clearly showed a band gap widening after hydrogenation. This was explained by an enhancement of sp³ hybridization with hydrogen chemisorption on the tube wall. Our density functional calculations also predicted a strong chemisorption with pi electron modulation and the band gap widening upon hydrogenation.

Original language	English
Pages (from-to)	S137-S142
Journal	Journal of the Korean Physical Society
Volume	42
Issue number	SPEC.
State	Published - Feb 2003
Event	Proceedings of The 11th Seoul International Symposium on the Physics of Semiconductors and Apllications - 2002 - Cheju Island, Korea, Republic of Duration: 20 Aug 2002 → 23 Aug 2002

Keywords

Functionalization
Nanotube
Transistor

Cite this

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title = "Band gap modulation of a carbon nanotube by hydrogen functionalization",

abstract = "We have investigated a modification of electronic structures of a carbon nanotube by hydrogen functionalization. Carbon nanotubes were exposed to atomic hydrogen which was generated by a hot tungsten filament in the vacuum chamber. Current-voltage characteristics clearly showed a band gap widening after hydrogenation. This was explained by an enhancement of sp3 hybridization with hydrogen chemisorption on the tube wall. Our density functional calculations also predicted a strong chemisorption with pi electron modulation and the band gap widening upon hydrogenation.",

keywords = "Functionalization, Nanotube, Transistor",

author = "Kim, \{Keun Soo\} and Park, \{Kyung Ah\} and Kim, \{Hyun Jin\} and Bae, \{Dong Jae\} and Lim, \{Seong Chu\} and Lee, \{Young Hee\} and Kim, \{Jae Ryong\} and Kim, \{Ju Jin\} and Choi, \{Won Bong\}",

year = "2003",

month = feb,

language = "English",

volume = "42",

pages = "S137--S142",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

number = "SPEC.",

note = "Proceedings of The 11th Seoul International Symposium on the Physics of Semiconductors and Apllications - 2002 ; Conference date: 20-08-2002 Through 23-08-2002",

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TY - JOUR

T1 - Band gap modulation of a carbon nanotube by hydrogen functionalization

AU - Kim, Keun Soo

AU - Park, Kyung Ah

AU - Kim, Hyun Jin

AU - Bae, Dong Jae

AU - Lim, Seong Chu

AU - Lee, Young Hee

AU - Kim, Jae Ryong

AU - Kim, Ju Jin

AU - Choi, Won Bong

PY - 2003/2

Y1 - 2003/2

N2 - We have investigated a modification of electronic structures of a carbon nanotube by hydrogen functionalization. Carbon nanotubes were exposed to atomic hydrogen which was generated by a hot tungsten filament in the vacuum chamber. Current-voltage characteristics clearly showed a band gap widening after hydrogenation. This was explained by an enhancement of sp3 hybridization with hydrogen chemisorption on the tube wall. Our density functional calculations also predicted a strong chemisorption with pi electron modulation and the band gap widening upon hydrogenation.

AB - We have investigated a modification of electronic structures of a carbon nanotube by hydrogen functionalization. Carbon nanotubes were exposed to atomic hydrogen which was generated by a hot tungsten filament in the vacuum chamber. Current-voltage characteristics clearly showed a band gap widening after hydrogenation. This was explained by an enhancement of sp3 hybridization with hydrogen chemisorption on the tube wall. Our density functional calculations also predicted a strong chemisorption with pi electron modulation and the band gap widening upon hydrogenation.

KW - Functionalization

KW - Nanotube

KW - Transistor

UR - https://www.scopus.com/pages/publications/0037307014

M3 - Conference article

AN - SCOPUS:0037307014

SN - 0374-4884

VL - 42

SP - S137-S142

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - SPEC.

T2 - Proceedings of The 11th Seoul International Symposium on the Physics of Semiconductors and Apllications - 2002

Y2 - 20 August 2002 through 23 August 2002

ER -

Band gap modulation of a carbon nanotube by hydrogen functionalization

Abstract

Keywords

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