Ultrafast carrier dynamics in purified and as-grown single-walled carbon nanotube films

Yong Bing Long; Li Song; Chun Yu Zhang; Li Wang; Pan Ming Fu; Zhi Guo Zhang; Si Shen Xie; Guo Ping Wang

doi:10.1088/1009-1963/14/10/036

Ultrafast carrier dynamics in purified and as-grown single-walled carbon nanotube films

Yong Bing Long^*, Li Song, Chun Yu Zhang, Li Wang, Pan Ming Fu, Zhi Guo Zhang, Si Shen Xie, Guo Ping Wang

^*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

Ultrafast time-resolved optical transmissions in purified and as-grown single-walled carbon nanotube films are measured at a temperature of 200K. The signal of the purified sample shows a crossover from photobleaching to photoabsorption. The former and the latter are interpreted as the state filling and the red shift of the π-plasmon, respectively. The signal of the as-grown sample can be perfectly fitted by a single-exponential with a time constant of 232fs. The disappearance of the negative component in the as-grown sample is attributed to the charge transfer between the semiconducting nanotubes and the impurities.

Original language	English
Pages (from-to)	2137-2140
Number of pages	4
Journal	Chinese Physics
Volume	14
Issue number	10
DOIs	https://doi.org/10.1088/1009-1963/14/10/036
Publication status	Published - 1 Oct 2005
Externally published	Yes

Keywords

Carbon nanotubes
Carrier dynamics
Charge transfer
π-plasmon resonance

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10.1088/1009-1963/14/10/036

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abstract = "Ultrafast time-resolved optical transmissions in purified and as-grown single-walled carbon nanotube films are measured at a temperature of 200K. The signal of the purified sample shows a crossover from photobleaching to photoabsorption. The former and the latter are interpreted as the state filling and the red shift of the π-plasmon, respectively. The signal of the as-grown sample can be perfectly fitted by a single-exponential with a time constant of 232fs. The disappearance of the negative component in the as-grown sample is attributed to the charge transfer between the semiconducting nanotubes and the impurities.",

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AU - Long, Yong Bing

AU - Song, Li

AU - Zhang, Chun Yu

AU - Wang, Li

AU - Fu, Pan Ming

AU - Zhang, Zhi Guo

AU - Xie, Si Shen

AU - Wang, Guo Ping

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N2 - Ultrafast time-resolved optical transmissions in purified and as-grown single-walled carbon nanotube films are measured at a temperature of 200K. The signal of the purified sample shows a crossover from photobleaching to photoabsorption. The former and the latter are interpreted as the state filling and the red shift of the π-plasmon, respectively. The signal of the as-grown sample can be perfectly fitted by a single-exponential with a time constant of 232fs. The disappearance of the negative component in the as-grown sample is attributed to the charge transfer between the semiconducting nanotubes and the impurities.

AB - Ultrafast time-resolved optical transmissions in purified and as-grown single-walled carbon nanotube films are measured at a temperature of 200K. The signal of the purified sample shows a crossover from photobleaching to photoabsorption. The former and the latter are interpreted as the state filling and the red shift of the π-plasmon, respectively. The signal of the as-grown sample can be perfectly fitted by a single-exponential with a time constant of 232fs. The disappearance of the negative component in the as-grown sample is attributed to the charge transfer between the semiconducting nanotubes and the impurities.

KW - Carbon nanotubes

KW - Carrier dynamics

KW - Charge transfer

KW - π-plasmon resonance

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Ultrafast carrier dynamics in purified and as-grown single-walled carbon nanotube films

Abstract

Keywords

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