Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Excitonic Fine Structure in Emission of Linear Carbon Chains. / Kutrovskaya, Stella; Osipov, Anton; Baryshev, Stepan; Zasedatelev, Anton; Samyshkin, Vladislav; Demirchyan, Sevak; Pulci, Olivia; Grassano, Davide; Gontrani, Lorenzo; Hartmann, Richard Rudolph; Portnoi, Mikhail E.; Kucherik, Alexey; Lagoudakis, Pavlos G.; Kavokin, Alexey.
в: Nano Letters, Том 20, № 9, 09.09.2020, стр. 6502-6509.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Excitonic Fine Structure in Emission of Linear Carbon Chains
AU - Kutrovskaya, Stella
AU - Osipov, Anton
AU - Baryshev, Stepan
AU - Zasedatelev, Anton
AU - Samyshkin, Vladislav
AU - Demirchyan, Sevak
AU - Pulci, Olivia
AU - Grassano, Davide
AU - Gontrani, Lorenzo
AU - Hartmann, Richard Rudolph
AU - Portnoi, Mikhail E.
AU - Kucherik, Alexey
AU - Lagoudakis, Pavlos G.
AU - Kavokin, Alexey
N1 - Funding Information: The work of S.K., S.D., and A.KA. is supported by the Westlake University (Project 041020100118) and by the Program 2018R01002 of Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang. RFBR grants 18-32-20006 and 19-32-90085 sponsored the work of S.K. and V.S.; 20-52-12026 and 20-02-00919 of S.B., A.Z., and P.L.; and the RScF grant 20-72-10145 to A.Z. A.KA. acknowledges Saint-Petersburg State University for the research grant ID 51125686. Funding by the EU MSCA RISE project “DiSeTCom” (GA823728) is gratefully acknowledged by O.P. and TERASSE (GA 823878) by M.E.P. and R.R.H. A.O. acknowledges the Ministry of Science and Higher Education within the State assignment FSRC Crystallography and Photonics RAS (Project 075-00842-20-00). The work of M.E.P. was supported by the ITMO Fellowship and Professorship Program 5-100. L.G. acknowledges support from Regione Lazio, through Progetto di Ricerca 85-2017-15125 according to L. R. 13/08. CPU computing time was granted by CINECA HPC center and by the “Departments of Excellence-2018” Program (Dipartimenti di Eccellenza) of the Italian Ministry of Research, DIBAF-Department of University of Tuscia, Project “Landscape 4.0—food, wellbeing and environment”. The synthesis and deposition of LLCC have been performed at the Vladimir State University. Raman spectra and absorbance were measured at the Center for Optical and Laser Materials Research, Research Park, St. Petersburg State University. Publisher Copyright: Copyright © 2020 American Chemical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/9/9
Y1 - 2020/9/9
N2 - We studied monatomic linear carbon chains stabilized by gold nanoparticles attached to their ends and deposited on a solid substrate. We observe spectral features of straight chains containing from 8 to 24 atoms. Low-temperature PL spectra reveal characteristic triplet fine structures that repeat themselves for carbon chains of different lengths. The triplet is invariably composed of a sharp intense peak accompanied by two broader satellites situated 15 and 40 meV below the main peak. We interpret these resonances as an edge-state neutral exciton and positively and negatively charged trions, respectively. The time-resolved PL shows that the radiative lifetime of the observed quasiparticles is about 1 ns, and it increases with the increase of the length of the chain. At high temperatures a nonradiative exciton decay channel appears due to the thermal hopping of carriers between parallel carbon chains. Excitons in carbon chains possess large oscillator strengths and extremely low inhomogeneous broadenings.
AB - We studied monatomic linear carbon chains stabilized by gold nanoparticles attached to their ends and deposited on a solid substrate. We observe spectral features of straight chains containing from 8 to 24 atoms. Low-temperature PL spectra reveal characteristic triplet fine structures that repeat themselves for carbon chains of different lengths. The triplet is invariably composed of a sharp intense peak accompanied by two broader satellites situated 15 and 40 meV below the main peak. We interpret these resonances as an edge-state neutral exciton and positively and negatively charged trions, respectively. The time-resolved PL shows that the radiative lifetime of the observed quasiparticles is about 1 ns, and it increases with the increase of the length of the chain. At high temperatures a nonradiative exciton decay channel appears due to the thermal hopping of carriers between parallel carbon chains. Excitons in carbon chains possess large oscillator strengths and extremely low inhomogeneous broadenings.
KW - carbon chains
KW - excitons
KW - nanoparticles
KW - photoluminescence spectra
UR - http://www.scopus.com/inward/record.url?scp=85090613423&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.0c02244
DO - 10.1021/acs.nanolett.0c02244
M3 - Article
C2 - 32787174
AN - SCOPUS:85090613423
VL - 20
SP - 6502
EP - 6509
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 9
ER -
ID: 70631982