Investigation of optical properties of Ag: PMMA nanocomposite structures

Ponelyte, Sigita; Palevičius, Arvydas; Guobienė, Asta; Puišo, Judita; Prosyčevas, Igoris

doi:10.1117/12.853677

Cited by 2 publications

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“…When the potential is switched off, the absorption bands corresponding to the anion and dianion disappear, and the absorption spectrum corresponding to the hybrid layer can be compared with the initial spectrum of the copolymer layer before doping. It is evident that, in both cases, the spectral changes at 400–500 nm remained and correspond to the changes produced by the formation of Ag nanoparticles, for which a surface plasmon (SP) absorption band is characteristic in this spectral region [ 40 , 41 , 42 ]. The position of the SP absorption band maximum depends on the size of the Ag-NPs.…”

Section: Resultsmentioning

confidence: 99%

Hybrid Layers of Donor-Acceptor Copolymers with Homogenous Silver Nanoparticle Coverage for Photonic Applications

et al. 2021

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Hybrid layers of donor-acceptor (D-A) copolymers containing N,N′-dialkylperylene-3,4,9,10-tetracarboxydiimide electron-acceptor units covered with silver nanoparticles (Ag-NPs) were prepared by electrochemical doping of pristine layers during reduction processes. In situ optical absorption spectra of the layers were recorded during the formation of Ag-NP coverage. The hybrid layers were characterized by absorption spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray spectroscopy (EDX). In the absorption spectra of the hybrid layers, a surface plasmon band characteristic of Ag-NPs appeared. Significant improvements in light absorption due to the plasmonic effects of Ag NPs were observed. Stable Ag-NPs with an average diameter of 41–63 nm were formed on the surface, as proven by SEM and XPS. The Ag-NP coverage and size depended on the hybrid layer preparation conditions and on the copolymer composition. The metallic character of the Ag-NPs was proven by XPS. The location in the surface layer was further confirmed by EDX analysis. To the best of our knowledge, this is the first report on such hybrid layers having the potential for a variety of photonic and electronic applications.

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Section: Resultsmentioning

confidence: 99%

Hybrid Layers of Donor-Acceptor Copolymers with Homogenous Silver Nanoparticle Coverage for Photonic Applications

et al. 2021

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“…These bands disappeared after turning off the potential, while a new broad absorption in the visible region with maxima located between 380 and 500 nm remained. This increase in absorption reflects changes caused by the formation of Ag-NPs and is related to the LSPR effect, for which an absorption band is characteristic in this spectral region [ 56 , 57 , 58 ]. The shapes of the absorption spectra of hybrid HL1 and HL2 layers prepared at first and second reduction, respectively, significantly differ.…”

Section: Resultsmentioning

confidence: 99%

Effects of the Donor Unit on the Formation of Hybrid Layers of Donor-Acceptor Copolymers with Silver Nanoparticles

et al. 2023

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Donor-acceptor (D-A) copolymers containing perylene-3,4,9,10-tetracarboxydiimide (PDI) electron-acceptor (A) units belonging to n-type semiconductors are of interest due to their many potential applications in photonics, particularly for electron-transporting layers in all-polymeric or perovskite solar cells. Combining D-A copolymers and silver nanoparticles (Ag-NPs) can further improve material properties and device performances. Hybrid layers of D-A copolymers containing PDI units and different electron-donor (D) units (9-(2-ethylhexyl)carbazole or 9,9-dioctylfluorene) with Ag-NPs were prepared electrochemically during the reduction of pristine copolymer layers. The formation of hybrid layers with Ag-NP coverage was monitored by in-situ measurement of absorption spectra. The Ag-NP coverage of up to 41% was higher in hybrid layers made of copolymer with 9-(2-ethylhexyl)carbazole D units than in those made of copolymer with 9,9-dioctylfluorene D units. The pristine and hybrid copolymer layers were characterized by scanning electron microscopy and X-ray photoelectron spectroscopy, which proved the formation of hybrid layers with stable Ag-NPs in the metallic state with average diameters <70 nm. The influence of D units on Ag-NP diameters and coverage was revealed.

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Investigation of optical properties of Ag: PMMA nanocomposite structures

Cited by 2 publications

References 0 publications

Hybrid Layers of Donor-Acceptor Copolymers with Homogenous Silver Nanoparticle Coverage for Photonic Applications

Hybrid Layers of Donor-Acceptor Copolymers with Homogenous Silver Nanoparticle Coverage for Photonic Applications

Effects of the Donor Unit on the Formation of Hybrid Layers of Donor-Acceptor Copolymers with Silver Nanoparticles

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