Controlling exciton decay dynamics in semiconducting single-walled carbon nanotubes by surface acoustic waves

M. E. Regler; H. J. Krenner; A. A. Green; M. C. Hersam; A. Wixforth; A. Hartschuh

doi:10.1016/j.chemphys.2012.10.014

Controlling exciton decay dynamics in semiconducting single-walled carbon nanotubes by surface acoustic waves

M. E. Regler, H. J. Krenner, A. A. Green, M. C. Hersam, A. Wixforth, A. Hartschuh^*

^*Corresponding author for this work

Materials Science and Engineering

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

4 Scopus citations

Abstract

We show that the photoluminescence intensity and decay dynamics of semiconducting single-walled carbon nanotube films can be remotely controlled by surface acoustic waves (SAW) launched on the piezoelectric substrate LiNbO ₃. Time-resolved measurements in the picosecond regime reveal that photoluminescence quenching results from a decrease of the radiative recombination rate by up to 25% for the accessible SAW amplitudes. The SAW-induced piezoelectric field acts as a quasi-static perturbation that polarizes the luminescent exciton state reducing the oscillator strength of the radiative transition following a quadratic field dependence. Surface acoustic waves could be used for the remote and contact-free electrical control of high-speed electronic and optoelectronic nanotube-based devices.

Original language	English (US)
Pages (from-to)	39-44
Number of pages	6
Journal	Chemical Physics
Volume	413
DOIs	https://doi.org/10.1016/j.chemphys.2012.10.014
State	Published - Feb 21 2013

Funding

This work was supported by the Deutsche Forschungsgemeinschaft (DFG) through the Nanosystems Initiative Munich (NIM) and HA4405/4-1. HJK acknowledges support by the DFG via the Emmy Noether Program (KR3790/2-1). MCH acknowledges support by the National Science Foundation (DMR-1006391 and DMR-1121262) and the Nanoelectronics Research Initiative.

Keywords

Exciton decay dynamics
Single-walled carbon nanotubes
Surface acoustic waves

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.chemphys.2012.10.014

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title = "Controlling exciton decay dynamics in semiconducting single-walled carbon nanotubes by surface acoustic waves",

abstract = "We show that the photoluminescence intensity and decay dynamics of semiconducting single-walled carbon nanotube films can be remotely controlled by surface acoustic waves (SAW) launched on the piezoelectric substrate LiNbO 3. Time-resolved measurements in the picosecond regime reveal that photoluminescence quenching results from a decrease of the radiative recombination rate by up to 25% for the accessible SAW amplitudes. The SAW-induced piezoelectric field acts as a quasi-static perturbation that polarizes the luminescent exciton state reducing the oscillator strength of the radiative transition following a quadratic field dependence. Surface acoustic waves could be used for the remote and contact-free electrical control of high-speed electronic and optoelectronic nanotube-based devices.",

keywords = "Exciton decay dynamics, Single-walled carbon nanotubes, Surface acoustic waves",

author = "Regler, {M. E.} and Krenner, {H. J.} and Green, {A. A.} and Hersam, {M. C.} and A. Wixforth and A. Hartschuh",

note = "Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft (DFG) through the Nanosystems Initiative Munich (NIM) and HA4405/4-1. HJK acknowledges support by the DFG via the Emmy Noether Program (KR3790/2-1). MCH acknowledges support by the National Science Foundation (DMR-1006391 and DMR-1121262) and the Nanoelectronics Research Initiative. ",

year = "2013",

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doi = "10.1016/j.chemphys.2012.10.014",

language = "English (US)",

volume = "413",

pages = "39--44",

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T1 - Controlling exciton decay dynamics in semiconducting single-walled carbon nanotubes by surface acoustic waves

AU - Regler, M. E.

AU - Krenner, H. J.

AU - Green, A. A.

AU - Hersam, M. C.

AU - Wixforth, A.

AU - Hartschuh, A.

N1 - Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft (DFG) through the Nanosystems Initiative Munich (NIM) and HA4405/4-1. HJK acknowledges support by the DFG via the Emmy Noether Program (KR3790/2-1). MCH acknowledges support by the National Science Foundation (DMR-1006391 and DMR-1121262) and the Nanoelectronics Research Initiative.

PY - 2013/2/21

Y1 - 2013/2/21

N2 - We show that the photoluminescence intensity and decay dynamics of semiconducting single-walled carbon nanotube films can be remotely controlled by surface acoustic waves (SAW) launched on the piezoelectric substrate LiNbO 3. Time-resolved measurements in the picosecond regime reveal that photoluminescence quenching results from a decrease of the radiative recombination rate by up to 25% for the accessible SAW amplitudes. The SAW-induced piezoelectric field acts as a quasi-static perturbation that polarizes the luminescent exciton state reducing the oscillator strength of the radiative transition following a quadratic field dependence. Surface acoustic waves could be used for the remote and contact-free electrical control of high-speed electronic and optoelectronic nanotube-based devices.

AB - We show that the photoluminescence intensity and decay dynamics of semiconducting single-walled carbon nanotube films can be remotely controlled by surface acoustic waves (SAW) launched on the piezoelectric substrate LiNbO 3. Time-resolved measurements in the picosecond regime reveal that photoluminescence quenching results from a decrease of the radiative recombination rate by up to 25% for the accessible SAW amplitudes. The SAW-induced piezoelectric field acts as a quasi-static perturbation that polarizes the luminescent exciton state reducing the oscillator strength of the radiative transition following a quadratic field dependence. Surface acoustic waves could be used for the remote and contact-free electrical control of high-speed electronic and optoelectronic nanotube-based devices.

KW - Exciton decay dynamics

KW - Single-walled carbon nanotubes

KW - Surface acoustic waves

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DO - 10.1016/j.chemphys.2012.10.014

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SN - 0301-0104

VL - 413

SP - 39

EP - 44

JO - Chemical Physics

JF - Chemical Physics

ER -

Controlling exciton decay dynamics in semiconducting single-walled carbon nanotubes by surface acoustic waves

Abstract

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Keywords

ASJC Scopus subject areas

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