Zhu, Jingyi ORCID: 0000-0003-0519-4724, Bernhardt, Robin, Cui, Weili ORCID: 0000-0001-6556-0218, German, Raphael, Wagner, Julian, Senkovskiy, Boris, V, Gruneis, Alexander ORCID: 0000-0003-2448-6060, Pichler, Thomas ORCID: 0000-0001-5377-9896, Li, Yuxuan, Li, Xueyang, Wu, Kaifeng, Liu, Rulin, Zhu, Xi ORCID: 0000-0002-2496-4053, Van Loosdrecht, Paul H. M. and Shi, Lei ORCID: 0000-0003-4175-7803 (2021). Unraveling the Excitonic Transition and Associated Dynamics in Confined Long Linear Carbon Chains with Time-Resolved Resonance Raman Scattering. Laser Photon. Rev., 15 (12). WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1863-8899

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Abstract

Long linear carbon chains are attracting intense interest arising from their remarkable properties, such as the tunable direct energy gap, the high mechanical hardness, and the high Raman response cross section, which would play a great role in their potential applications in future nanotechnology. Here the excitonic transitions and the associated relaxation dynamics of nanotube confined long linear carbon chains are comprehensively interrogated by using steady state and time-resolved Raman spectroscopies. The exciton relaxation dynamics of the confined carbon chains occurs on a hundred of picoseconds timescale, in strong contrast to the host dynamics that occurs on a few picoseconds' timescale. A prominent time-resolved Raman response is observed over a broad energy range extending from 1.2 to 2.8 eV, which includes the strong Raman resonance region around 2.2 eV. Strong coupling between the chain and the nanotube host is found from the dynamics at high excitation energies which provides clear evidence for an efficient energy transfer from the host carbon nanotube to the chain. The experimental study presents the first unique characterization of the long linear carbon chain exciton dynamics, providing indispensable knowledge for the understanding of the interactions between different carbon allotropes.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Zhu, JingyiUNSPECIFIEDorcid.org/0000-0003-0519-4724UNSPECIFIED
Bernhardt, RobinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cui, WeiliUNSPECIFIEDorcid.org/0000-0001-6556-0218UNSPECIFIED
German, RaphaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wagner, JulianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Senkovskiy, Boris, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gruneis, AlexanderUNSPECIFIEDorcid.org/0000-0003-2448-6060UNSPECIFIED
Pichler, ThomasUNSPECIFIEDorcid.org/0000-0001-5377-9896UNSPECIFIED
Li, YuxuanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, XueyangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wu, KaifengUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, RulinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhu, XiUNSPECIFIEDorcid.org/0000-0002-2496-4053UNSPECIFIED
Van Loosdrecht, Paul H. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shi, LeiUNSPECIFIEDorcid.org/0000-0003-4175-7803UNSPECIFIED
URN: urn:nbn:de:hbz:38-593704
DOI: 10.1002/lpor.202100259
Journal or Publication Title: Laser Photon. Rev.
Volume: 15
Number: 12
Date: 2021
Publisher: WILEY-V C H VERLAG GMBH
Place of Publication: WEINHEIM
ISSN: 1863-8899
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NANOTUBES; SPECTROSCOPY; POPULATION; ABSORPTION; CHEMISTRY; CARBYNEMultiple languages
Optics; Physics, Applied; Physics, Condensed MatterMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59370

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