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Information × Registration Number 0221U104739, 0119U100300 , R & D reports Title Photonics of plasmonic nanostructures for photovoltaics and sensorics. popup.stage_title Head Dmytruk Igor M., Доктор фізико-математичних наук Registration Date 07-04-2021 Organization Taras Shevchenko National University of Kyiv popup.description2 Object of research: Carrier structures of local plasmons, plasmon polaritons and collectivized plasmon mode, metal and semiconductor self-organized nanostructures, nanoparticles of precious metals and semiconductors. Purpose: Research of fundamental properties of localized and collective coherent electronic excitations, their interaction with electromagnetic radiation, near-field interaction in plasmon structures with formation of collective plasmon modes, characterization of laser-induced metal and semiconductor structures, nanoparticles and nanoparticles. Research methods: Scanning and transmission electron microscopy, absorption spectroscopy, reflection, photoluminescence, Raman scattering. At room temperature without special fluorescent labels achieved 1220-fold enhancement of photoluminescence (PL) of the nucleotide 5'deoxyadenosine monophosphate on the developed plasmonic metasurface Ag laser-induced periodic surface structures (LIPPS) / 4-s Au nanoparticles (LF). The amplification was determined to be due to: (i) the highest near-field plasmon interaction in the LIPPS with subsequent formation of the plasmon collectivized slit mode and (ii) the highest concentration of “hot spots” on the LIPS and on the NA tips. The dependence of the LIPS period on metals (Cu, Ag, W) and semiconductor (Si) on the irradiation wavelength (main - 800 nm, 2nd and 3rd harmonics of the femtosecond laser - 400 and 266 nm) was determined. For the first time, LIPPS on these metals was obtained in a controlled manner under the action of the 3rd harmonic of the laser. The spectra of semiconductor CdSe LFs and quantum dots formed in the process of laser ablation have been experimentally and theoretically investigated. The temperature dependences of the PL of spherical Ag and Cu LFs have been studied, in particular, the anomalous temperature dependence of the PLs of Cu LFs has been explained.  Product Description popup.authors Yeshchenko Oleh A. Berezovska Nataliya I. Degoda Volodymyr Yа. Kolodka Roman S. Kosach Vitaliy V. Losytsʹkyy Mykhaylo Yu. Stanovyy Oleksandr Р. popup.nrat_date 2021-04-07 Close