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Invited researcher Rogach Andrey
Contract number
14.Y26.31.0028
Time span of the project
2018-2020
Head of the laboratory

As of 15.02.2021

9
Number of staff members
31
scientific publications
3
Objects of intellectual property
General information
Name of the project:   Luminescent carbon dots

Strategy for Scientific and Technological Development Priority Level: б

Goals and objectives
Research directions: Nanotechnologies

Project goals: Developing new methods of synthesis of C-dots and structures based on them with optical characteristics that are suitable for creating luminescent «green photonics» devices, determining fundamental physical mechanisms laying in the basis of formation of the electron structure of C-dots and responsible for processes of excitation, deexcitation and transfer of charge and energy carriers in composite materials based on C-dots

Project objective: The research of the features of optical and radiationless transitions and the mechanisms of dissipation of energy of elementary excitations in hybrud systems with semiconductor and carbon nanoparticles

The practical value of the study

Our researchers has developed theoretical models describing the energy structure of intrinsic and extrinsic states of carbon dots, determined the parameters of doping of carbon dots that influence their optical transitions and charge carrier mobility;

The Laboratory has manufactured samples of solutions of carbon dots doped with heteroatoms in different solvents with controllable optical transitions in the visible and infrared region of the spectrum and high quantum output;

Our researchers have manufactured composite materials based on carbon dots embedded in polymer and solid-state porous matrices with enhanced optical characteristics in the green region of the spectrum;

Our researchers have produced samples of light-emitting diodes radiating in the green and red spectral range and white LEDs.

Implemented results of research:

The Laboratory has developed methods of the synthesis of carbon dots and composite materials based on them for the production of white light-emitting diodes.

We have prepared 3 applications for patents for inventions, including in the international procedure.

Education and career development:

On the basis of the achieved results, we have refined lectures and developed a case study with the topic «Research of the nature of luminescence centres and the structure of carbon nanoparticles using luminescence absorption spectroscopy» for students of the master's degree programme of ITMO University «Photonics and optoinformatics». Case studies can be conducted on the grounds of the International Research and Education Centre for Nanostructure Physics of ITMO University.

In 2018, Xiong Yuan, an employee of the laboratory of Prof. Rogach at the City University of Hong Kong, conducted training for the employees of the Laboratory for Luminescent Carbon Quantum Nanostructures on methods of the synthesis of carbon nanoparticles. As a result of the training and collaborative work, two articles were prepared.

In 2019 and 2020, the head of the Laboratory Yelena V. Ushakova completed an internship at the City University of Hong Kong (CityU) at the laboratory of Prof. Rogach. As a result of the internship, 11 articles were prepared.

In 2018, the PCNSPA conference was conducted.

In 2021, a seminar and presentation of the laboratories of the International Research and Education Centre for Nanostructure Physics of ITMO University, including the Laboratory for Luminescent Carbon Quantum Nanostructures , was conducted for students, postgraduates, and employees of the mega-faculty of physics and technology of ITMO University.

Collaborations:

City University of Hong Kong, Jilin University (China PR), University of Macau (China PR), Qatar University, University of Science and Technology Beijing (China PR), Saint Petersburg State University (Russia), Ioffe Institute (Russia): joint research. The collaboration resulted in 32 articles published since 2018 in peer-reviewed journals.

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Xiong Y., Schneider J., Ushakova E.V., Rogach A.L.
Influence of molecular fluorophores on the research field of chemically synthesized carbon dots, Nano Today, 2018, month (V. 23)
Tian Z., Li D., Ushakova E.V., Maslov V.G., Zhou D., Jing P., Shen D., Qu S., Rogach A.L.
Multilevel Data Encryption Using Thermal‐Treatment Controlled Room Temperature Phosphorescence of Carbon Dot/Polyvinylalcohol Composites,Advanced Science, 2018, month (V. 5, No. 9)
Kundelev E. V. Tepliakov N. V., Leonov M. Y., Maslov V. G., Baranov A. V., Fedorov A. V., Rukhlenko I. D., Rogach A. L.
Amino Functionalization of Carbon Dots Leads to Red Emission Enhancement, The Journal of Physical Chemistry Letters, 2019, August (V. 10, No. 17)
Tepliakov N. V., Kundelev E. V., Khavlyuk P. D., Xiong Y., Leonov M. Y., Zhu W., Baranov A. V., Fedorov A. V., Rogach A. L., Rukhlenko I. D.
sp2–sp3-Hybridized atomic domains determine optical features of carbon dots, ACS nano, 2019, August (V. 13, No. 9)
Ragazzon G., Cadranel A., Ushakova E. V., Wang Y., Guldi D. M., Rogach A. L., Kotov N.A., Prato M.
Optical processes in carbon nanocolloids, Chem, 2020, December (V. 6, No. 12)
Liang T., Liu E., Li M., Ushakova E. V., Kershaw S. V., Rogach A. L., Tang Z., Qu S.
Morphology Control of Luminescent Carbon Nanomaterials: From Dots to Rolls and Belts, ACS nano, 2021, December (V. 15, No.1)
Liu E., Liang T., Ushakova E. V., Wang B., Zhang B., Zhou H., Xing G., Wang C., Tang Z., Qu S., Rogach, A. L.
Enhanced Near-Infrared Emission from Carbon Dots by Surface Deprotonation, The Journal of Physical Chemistry Letters, 2020, December (V. 12, No. 1)
Kundelev, E. V., Tepliakov, N. V., Leonov, M. Y., Maslov, V. G., Baranov, A. V., Fedorov, A. V., Rukhlenko I. D., Rogach, A. L.
Toward Bright Red-Emissive Carbon Dots through Controlling Interaction among Surface Emission Centers, The Journal of Physical Chemistry Letters, 2020, September (V. 11, No. 19)
Zhang X., Zeng Q., Xiong Y., Ji T., Wang C., Shen X., Lu M., Wang H., Wen S., Zhang Y., Yang X., Ge X., Zhang W., Litvin A. P., Baranov A. V., Yao D., Zhang H., Yang B., Rogach A. L., Zheng, W.
Energy Level Modification with Carbon Dot Interlayers Enables Efficient Perovskite Solar Cells and Quantum Dot Based Light‐Emitting Diodes, Advanced Functional Materials, 2020, January (V. 30, No. 11)
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