Magnetically dependent photoluminescence of tetracene nanoparticles
https://doi.org/10.17586/2220-8054-2025-16-4-419-426
Abstract
Tetracene nanocrystals prepared by the reprecipitation method are investigated using magnetophotoluminescence, steady-state optical absorption and emission spectroscopies. The steady-state absorption spectra indicate that the tetracene nanoparticles possess a crystalline structure. The magnetic field dependence of photoluminescence for tetracene nanoparticles has a range almost 40 times smaller than that for tetracene macrocrystals. This result is interpreted within the framework of a theoretical model based on the solution of the diffusion equation for a restricted spherical volume. The calculations show that this decrease in magnetic field dependences of photoluminescence can be sensitive to the size of tetracene crystals. According to the theoretical model, the triplet-triplet annihilation rate increases in nanostructured tetracene.
Keywords
tetracene nanocrystals,
singlet fission,
triplet-triplet annihilation,
magnetically dependent photoluminescence
Supporting agencies: The authors express their gratitude to the Ministry of Science and Higher Education of the Russian Federation for funding [Grant No. FSGU-2023-0003, Grant No. 075-15-2024-550]. In this work, equipment from Institute of micro- and nanotechnology of Orenburg State University was used.
About the Authors
M. G. Kucherenko
Orenburg State University, Centre of Laser and Information Biophysics
Russian Federation
Russian Federation
Michael G. Kucherenko
Orenburg 460018, Russia
S. A. Penkov
Orenburg State University, Centre of Laser and Information Biophysics
Russian Federation
Russian Federation
Sergey A. Penkov
Orenburg 460018, Russia
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Review
For citations:
Kucherenko M.G., Penkov S.A. Magnetically dependent photoluminescence of tetracene nanoparticles. Nanosystems: Physics, Chemistry, Mathematics. 2025;16(4):419-426. https://doi.org/10.17586/2220-8054-2025-16-4-419-426
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