A. A. Sergeev

University of Hong Kong

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S. S. Voznesenskiy

Institute of Automation and Control Processes

Kseniia A. Sergeeva

City University of Hong Kong

Aleksandr Mironenko

Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences

Kam Sing Wong

University of Hong Kong

Svetlana Bratskaya

Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences

A.A. Leonov

Institute of Automation and Control Processes

Andrey L. Rogach

City University of Hong Kong

Aleksandr A. Kuchmizhak

Institute of Automation and Control Processes

ИВ

И. В. Постнова

Far Eastern Federal University

A. N. Galkina

Energy Research Institute

Cooperative Institutions

Russian Academy of Sciences

100

University of Hong Kong

Far Eastern Branch of the Russian Academy of Sciences

Hong Kong University of Science and Technology

Far Eastern Federal University

Institute of Automation and Control Processes

Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences

City University of Hong Kong

South China University of Technology

Chinese University of Hong Kong

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Enhancement of Photoluminescence of Colloidal Quantum Dots in Plasmonic Metasurfaces Supporting Bound State in the Continuum

2022 Photonics & Electromagnetics Research Symposium (PIERS) (2024)

A. Seredin Kseniia V. Baryshnikova Mihail Petrov A. A. Sergeev Д. В. Павлов

Plasmonic Nanoparticles

10.1109/piers62282.2024.10618245

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Citations (0)

Photonic materials prepared through the entrapment of quantum dots into silica

Colloids and Surfaces A Physicochemical and Engineering Aspects (2017)

Irina Postnova Sergei Voznesenskiy A. A. Sergeev A. N. Galkina Yury N. Kulchin

Absorbance

Matrix (chemical analysis)

10.1016/j.colsurfa.2017.09.020

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Citations (7)

Side-Chain-Promoted Polymer Architecture Enabling Stable Mixed-Halide Perovskite Light-Emitting Diodes

ACS Energy Letters (2024)

Benzheng Lyu Hong Lin Dongyu Li A. A. Sergeev Qiang Wang

Mixed-halide perovskite nanocrystals (PeNCs) featuring bandgap-tunable luminescence with narrow bandwidth have emerged as promising electroluminescent materials for light-emitting diodes (LEDs) to satisfy the color standard of Rec. 2100. However, the phase segregation of mixed-halide perovskites severely restricts the spectral stability and lifetime of perovskite LEDs (PeLEDs). Here, we report that the introduction of multifunctional side-chain-promoted polymer architectures in the synthesis of I/Br-mixed PeNCs to suppress halide segregation and enable electroluminescent stability of the PeLEDs up to ∼2500 min, which is the longest to our knowledge. Meanwhile, the PeLEDs exhibit the pure-red electroluminescence spectrum with Commission Internationale de l'Eclairage coordinates (0.705, 0.292) at one of the highest external quantum efficiencies reported to date, 23.6%. Fundamentally, the as-proposed polymer ligand architecture simultaneously offers long-term nanocrystal dispersion, good charge transport, defect elimination, and phase segregation suppression. Overall, the work demonstrates the potential of the multifunctionalized polymer ligands for developing high-performance PeLEDs toward practical applications.

10.1021/acsenergylett.4c00355

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Citations (5)

Characterization and photocatalytic activity of SiO2, FeOx coatings formed by plasma electrolytic oxidation of titanium

Surface and Coatings Technology (2016)

M. S. Vasilyeva В. С. Руднев А. А. Зверева К. Н. Килин A. A. Sergeev

Plasma electrolytic oxidation

Photodegradation

Titanium oxide

10.1016/j.surfcoat.2016.06.022

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Citations (11)

Carbon Dot Emission Enhancement in Covalent Complexes with Plasmonic Metal Nanoparticles

Nanomaterials (2023)

Irina A. Arefina D. A. Kurshanov Anna A. Vedernikova Denis V. Danilov Aleksandra V. Koroleva

Carbon dots can be used for the fabrication of colloidal multi-purpose complexes for sensing and bio-visualization due to their easy and scalable synthesis, control of their spectral responses over a wide spectral range, and possibility of surface functionalization to meet the application task. Here, we developed a chemical protocol of colloidal complex formation via covalent bonding between carbon dots and plasmonic metal nanoparticles in order to influence and improve their fluorescence. We demonstrate how interactions between carbon dots and metal nanoparticles in the formed complexes, and thus their optical responses, depend on the type of bonds between particles, the architecture of the complexes, and the degree of overlapping of absorption and emission of carbon dots with the plasmon resonance of metals. For the most optimized architecture, emission enhancement reaching up to 5.4- and 4.9-fold for complexes with silver and gold nanoparticles has been achieved, respectively. Our study expands the toolkit of functional materials based on carbon dots for applications in photonics and biomedicine to photonics.

Carbon fibers

Surface Modification

Silver nanoparticle

10.3390/nano13020223

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Citations (4)

Morphological, optical, and structural characteristics of the spicules of glass sponges and the photoreceptor hypothesis of their survival

BIOPHYSICS (2010)

S. S. Voznesenskiy Yu. N. Kulchin A. N. Galkina A. A. Sergeev

Sponge

Morphology

10.1134/s000635091001015x

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Citations (0)

Hybrid Au@Si microspheres produced via laser irradiation in liquid for nonlinear photonics

Optics & Laser Technology (2021)

Stanislav O. Gurbatov Vladislav Puzikov Artem Cherepakhin Eugeny Mitsai Natalie Tarasenka

Nanomaterials

Nanocrystalline material

Nanophotonics

10.1016/j.optlastec.2021.107666

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Citations (9)

ZnS:Mn<sup>2+</sup> Quantum Dots as Efficient Photocatalyst for Organic Dye Decolorization

Defect and diffusion forum/Diffusion and defect data, solid state data. Part A, Defect and diffusion forum (2018)

Kseniia A. Sergeeva A. A. Sergeev Yulia V. Kuznetsova S. S. Voznesenskiy

Fluorescent zinc blende structured pure and Mn 2+ doped ZnS quantum dots were prepared by simple aqueous based technique at room temperature. Under UV-excitation the quantum dots show photoluminescence bands at 2.1 and 3.0 eV corresponded to Mn 2+ and ZnS intrinsic defect emission, respectively. The photocatalytic activity was tested for the photodegradation of methylene blue in aqueous solution. The influence of the Mn 2+ concentration on the dye decolorization efficiency was studied. The highest photocatalytic degradation rate of methylene blue was obtained for ZnS quantum dots in glutathione shell doped with 0.5 at.% of Mn 2 + . The mechanisms of photoluminescence and photocatalytic activity were discussed.

Photodegradation

Methylene blue

Quantum yield

10.4028/www.scientific.net/ddf.386.207

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Citations (2)

Mg2Si is the new black: Introducing a black silicide with >95% average absorption at 200–1800 nm wavelengths

Applied Surface Science (2022)

A. V. Shevlyagin Vladimir M. Il’yaschenko Aleksandr A. Kuchmizhak Eugeny Mitsai A. A. Sergeev

Black silicon

Visible spectrum

10.1016/j.apsusc.2022.154321