0588438 - FZÚ 2025 RIV CH eng J - Journal Article
Remeš, Zdeněk - Babčenko, Oleg - Jarý, Vítězslav - Beranová, Klára
Enhanced photoluminescence of plasma-treated recycled glass particles.
Nanomaterials. Roč. 14, č. 13 (2024), č. článku 1091. ISSN 2079-4991. E-ISSN 2079-4991
R&D Projects: GA MŠMT(CZ) GA23-05500S; GA MŠMT(CZ) 8X23025; GA MŠMT LM2023051; GA MŠMT(CZ) EH22_008/0004596
Grant - others:AV ČR(CZ) SAV-23-13
Program: Bilaterální spolupráce
Institutional support: RVO:68378271
Keywords : recycling * silicon dioxide * glass * plasma * annealing * photoluminescence * Raman spectroscopy * X-ray photoelectron spectroscopy
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.4, year: 2023
Method of publishing: Open access
Permanent Link: https://hdl.handle.net/11104/0355342

0587391 - FZÚ 2025 RIV CZ eng C - Conference Paper (international conference)
Babčenko, Oleg - Remeš, Zdeněk - Beranová, Klára - Kolářová, Kateřina - Lörinc, J. - Prošek, Z. - Tesárek, P.
Surface changes induced by plasma treatment and high temperature annealing of silicon dioxide microparticles.
NANOCON 2023 Conference Proceedings. Ostrava: Tanger Ltd., 2024, s. 196-202. ISBN 978-80-88365-15-0. ISSN 2694-930X.
[NANOCON 2023 - International Conference on Nanomaterials - Research & Application /15./. Brno (CZ), 18.10.2023-20.10.2023]
R&D Projects: GA MŠMT(CZ) GA23-05500S; GA MŠMT(CZ) 8X23025; GA MŠMT LM2023051
Institutional support: RVO:68378271
Keywords : silicon dioxide * plasma treatment * annealing * photoluminescence * measuring setup
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
https://www.confer.cz/nanocon/2023/read/4781-silicon-dioxide-microparticles-modification-by-temperature-and-plasma-treatment.pdf
Permanent Link: https://hdl.handle.net/11104/0354577

0586898 - FZÚ DATA Scientific data      2024
Remeš, Zdeněk - Babčenko, Oleg - Jarý, Vítězslav - Beranová, Klára

Dataset for Enhanced photoluminescence of plasma treated recycled glass particles.
Version 2      

Description: Figure 1. Recycled soda-lime glass powder is a sustainable material that is also often considered as a filler in cement-based composites. The changes in the surface properties of the glass particles due to the treatments were analyzed by X-ray photoelectron spectroscopy (XPS) and optical spectroscopy. We have found, that there is a relatively high level of carbon contamination on the surface of glass particles (around 30 at.%), so plasma technology and thermal annealing were tested for the surface cleaning. Room temperature plasma treatment was not sufficient to remove carbon contamination from the surface of recycled glass particles.
Instead, the room temperature plasma treatment of recycled soda-lime glass particles leads to a significant enhancement of their room temperature photoluminescence (PL) by increasing the intensity and accelerating the decay of the photolu-minescence. The enhanced blue PL after room temperature plasma treatment was attributed to the presence of carbon contamination on the glass surface and associated charge surface and interfacial defects and interfacial states. Therefore, we propose blue photoluminescence under UV LED as a fast and inexpensive method to indicate carbon contamination on the surface of glass particles.

Figure 2. The normalized FTIR absorbance spectra measured in FTIR spectrometer with ATR accessory after low pressure plasma treatment at room temperature (a) and at 500°C (b).

Figure 3. IR Raman spectra measured in FTIR spectrometer with 1064 nm laser excitation after low pressure plasma treatment at room temperature (a) and at 500°C (b).

Figure 4. C 1s (a), and O 1s (b) XPS spectra (from top to bottom) for the “As received” sample, the samples treated in H2, O2, and N2 plasma at room temperature, annealed in H2, O2, and N2 atmosphere at 500°C, and annealed in H2, O2, and N2 plasma at 500°C. Dots represent measured data, black lines results of fits, colored lines fitting components. Peaks shaded by grey originate from carbon-oxygen contamination.

Figure 5. Ratio of selected components derived from fitting XPS spectra. We use following labels for simplification: BO: Si-O-Si bridging oxygen, NBO: Si-O-M non-bridging oxygen, H2O: oxygen from hydrous species bound to silicon (H2O, Si-OH), CO: carbon-oxygen contaminations (C-O(H), C=O, COOH), C: atomic concentration of carbon normalized to 1. The absolute uncertainty was esti-mated to be of ± 0.2 and not included in the graph for better clarity. It should be noted that a sub-stantial portion of the uncertainty is given by a systematic approach of data analysis (same in all cases) resulting in high reliability of data trends.

Figure 6. PL spectra of treated glass powder oxygen plasma. “RT plasma”, resp. “500°C plasma” represents the PL spectra measured after room temperature, resp. 500°C O2 plasma treatment, The PL spectra of as received and annealed at 500°C in O2 atmosphere (no plasma) glass powder were added for comparison.

Figure 7. PL spectra of room temperature H2 plasma treated glass powder using sinusoidal UV LED excitation at frequency of 100 kHz (a). The curve with error bars corresponds to the spectrally re-solved mean PL decay time τ calculated from the phase shift between the excitation and the emis-sion spectra. The time resolved PL emission measured by TCSPC at 450 nm is shown in (b). The instrumental response function measured at the excitation pulse wavelength (excitation pulse shape) and fitted curve were added for comparison. All measurements were done at RT.

Popis změny dat: A .tif file called Figure 1 was added to the dataset.
Keywords : recycling * silicon dioxide * glass * plasma * annealing * photoluminescence * Raman spectroscopy * X-ray photoelectron spectroscopy
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
DOI: https://doi.org/10.57680/asep.0586898
Handle: https://hdl.handle.net/11104/0354272
Depositor: admin
Date of release: 18.6.2024
 
ASEP publication:
Enhanced photoluminescence of plasma-treated recycled glass particles

0586288 - FZÚ DATA Scientific data      2024
Ryabchikov, Yury V. - Mirza, M. Inam - Flimelová, Miroslava - Kaňa, A. - Romanyuk, Olexandr

Dataset for Merging of Bi-Modality of Ultrafast Laser Processing: Heating of Si/Au Nanocomposite Solutions with Controlled Chemical Content.

Description: The dataset contains the original data of experimental measurements for the manuscript submitted to the journal Nanomaterials:
Authors: Yury V. Ryabchikov, Inam Mirza, Miroslava Flimelová, Antonin Kana and Oleksandr Romanyuk
Title: Volumetric Modification of Transparent Materials with Two-Color Laser Irradiation: Insight from Numerical Modeling
Submission date: January 3, 2024
The detailed description of each file in the format *.png is given in the txt-file ReadMe.
The data were used to produce figures presented in the manuscript.

Keywords : ultrafast laser processing * silicon nanoparticles * plasmonic nanoparticles * Si-Au composite nanoparticles * nanocomposites * laser ablation * hyperthermia * photo-thermal therapy
OECD category: Nano-materials (production and properties)
DOI: https://doi.org/10.57680/asep.0586288
Handle: https://hdl.handle.net/11104/0353844
Depositor: admin
Date of release: 31.5.2024
 
ASEP publication:
Merging of Bi-modality of ultrafast laser processing: Heating of Si/Au nanocomposite solutions with controlled chemical content

0585820 - FZÚ 2025 RIV GB eng J - Journal Article
Popelář, Tomáš - Matějka, Filip - Kopenec, Jakub - Morselli, G. - Ceroni, P. - Kůsová, Kateřina
Why do Si quantum dots with stronger fast emission have lower external photoluminescence quantum yield?
Nanoscale Advances. Roč. 6, č. 10 (2024), s. 2644-2655. ISSN 2516-0230. E-ISSN 2516-0230
R&D Projects: GA ČR(CZ) GA23-05837S
Institutional support: RVO:68378271
Keywords : silicon quantum dots * fast emission * photoluminescence dynamics * quantum yield
OECD category: Nano-materials (production and properties)
Impact factor: 4.6, year: 2023
Method of publishing: Open access
Permanent Link: https://hdl.handle.net/11104/0353492