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0Oriented carbon chain - new route for thin-films photonics
devices
A. Kucherik1*, V. Samyshkin1, A. Abramov1, A. Lelekova1, S. Arakelian1, A. Povolotskiy2, A. Osipov1
1-Department of Physics and Applied Mathematics, Stoletov Vladimir State University, 600000 Gorkii street,
Vladimir, Russia
2- Institute of Chemistry, St. Petersburg State University, 198504, Ulianovskaya str. 5, St. Petersburg, Russia
Carbon has established itself as one of the most promising materials for a number of nanotechnology applications. The variety of allotropic forms of carbon allows the creation of a wide range of nanostructures that possess unique optical and electronic properties. Over the past decade, many research papers have been dedicated to the synthesis and fabrication of sp-hybridized carbon structures. The nanoscience community pays special attention to one-dimensional sp-carbon due to its unusual band structure, leading to its ability to emit and absorb visible light.
The control of the chain length and types of interatomic bonds in linear chains is essential for controlling the electric resistance and photoluminescence of fabricated films. In our works, we developed the method of the synthesis and fabrication of linear carbon chains via the laser fragmentation of colloidal systems [1,2], resulting in the stabilization of linear sp-chains by gold anchors attached to their ends [3].
This study demonstrates the synthesis of linear carbon structures through laser irradiation of colloidal systems containing carbon nanoparticles. The use of nanosecond laser pulses allows for partial particle fragmentation, disrupting bonds between layers and leading to the formation of linear structures from graphene layers. Under laser irradiation, sp-fragments of linear chains form, experience kinks, and bond to create sp2- and sp3-bonds. During ablation in a liquid medium, linear chains become more resistant due to viscous forces, as observed in the Raman spectra. We investigated the optical properties of extremely thin carbon chains.
We show that the gold clusters also act as a source of electron doping thus changing the intensity of photoluminescence from quadratic dependence on the pumping intensity without gold to linear with gold. We also observe that the excitation of the film at the gold plasmon frequency causes the blue shift of photoluminescence and estimate on the basis of this effect the minimum length of the carbyne chains [4]. The high degree of alignment of the gold-terminated carbyne chains results in strongly anisotropic light absorption characterized by a distinctive cosine dependence on the angle between the carbyne molecule and polarization plane of the excitation.
This work was supported by the framework of RSF-grant 23-12-20004 (https://rscf.ru/project/23-12-20004/).
[1] V. Samyshkin, A. Lelekova, A. Osipov, D. Bukharov, I. Skryabin, S. Arakelian, A. Kucherik, S. Kutrovskaya, Photosensitive free-standing ultra-thin carbyne-gold films, Opt. Quantum Electron., 51, 394, (2019).
[2] A.O. Kucherik, S.M. Arakelian, S.V. Garnov, S.V. Kutrovskaya, D.S. Nogtev, A.V. Osipov, K.S. Khor'kov, Two-stage laser-induced synthesis of linear carbon chains, Quantum Electron., 46, 627, (2016).
[3] S. Kutrovskaya, A. Osipov, S. Baryshev, A. Zasedatelev, V. Samyshkin, S. Demirchyan, O. Pulci, D. Grassano, L. Gontrani, R. Hartmann, et al, Excitonic Fine Structure in Emission of Linear Carbon Chains, Nano Lett., 20, 6502-6509, (2020).
[4] A. Kucherik, A. Osipov, V. Samyshkin, R.R. Hartmann, A. Povolotskiy, M.E. Portnoi, Polarization-sensitive photoluminescence from aligned carbon chains terminated by gold clusters, PRL, 132, 056902, (2024).
