Light luminescence and trapping in polydimethylsiloxane foils with low concentration of gold nanoparticles

0556200 - ÚJF 2023 RIV GB eng J - Journal Article
Torrisi, L. - Cutroneo, Mariapompea - Silipigni, L. - Fazio, B. - Di Marco, G. - Slepička, P. - Fajstavr, D. - Torrisi, A.
Light luminescence and trapping in polydimethylsiloxane foils with low concentration of gold nanoparticles.
Radiation Effects and Defects in Solids. Roč. 177, 1-2 (2022), s. 40-56. ISSN 1042-0150. E-ISSN 1029-4953
R&D Projects: GA MŠMT EF16_013/0001812; GA ČR GA19-02482S
Research Infrastructure: CANAM II - 90056
Institutional support: RVO:61389005
Keywords : PDMS * AuNPs * luminescence * light trapping * SPR
OECD category: Nuclear related engineering
Impact factor: 1, year: 2022
Method of publishing: Limited access
https://doi.org/10.1080/10420150.2022.2049781

Light trapping and luminescence have been observed in polydimethylsiloxane (PDMS) foils containing about 0.1-0.2 wt% gold nanoparticles (AuNPs). The so-prepared PDMSs have been physically characterized using SEM microscopy, UV-Vis, FTIR and Raman spectroscopies. The used AuNPs have been controlled by means of the surface plasmon resonance absorption spectra. In the AuNPs-PDMS foils, a luminescence peak at about 425 nm has been induced by an exciting light at 280 nm. The light injection with an optical fiber is trapped inside the polymer-containing NPs and illuminates all the polymer volume. The measurements of scattered light show an increment in the light intensity due to the presence of AuNPs and air bubbles inducing diffractions, reflections and Mie scattering. Further investigations have been conducted irradiating the PDMS with AuNPs in vacuum with 2.9 MeV proton beams producing luminescence in the blue region. The mechanisms of light trapping and luminescence and the possible applications of the prepared material are presented and discussed.
Permanent Link: http://hdl.handle.net/11104/0331528