Photocurrent enhancement in polythiophene doped with silver nanoparticles

Szeremeta, Janusz; Nyk, Marcin; Samoć, Marek

doi:10.1016/j.optmat.2014.08.014

Cited by 14 publications

(8 citation statements)

References 32 publications

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“…Previously, Szeremeta, et al 38 observed a decrease of the photoluminescence intensity upon the addition of metal NPs into a P3HT film. They hypothesized, that the metal (Ag) NPs can act as a recombination boundary for the diffusing excitons.…”

Section: Singlet Exciton Recombinationmentioning

confidence: 95%

Phonons spreading from laser-heated gold nanoparticle array accelerate diffusion of excitons in an underlying polythiophene thin film

Rais

Menšı́k

Paruzel

et al. 2017

Phys. Chem. Chem. Phys.

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Localized surface plasmon (LSP) photophysical phenomena occurring in metal nanostructures are often presented as a method to effectively couple light into photovoltaic devices of sub-wavelength-scale thickness. However, the excitation of LSP is also associated with rapid energy dissipation leading to local heating, which affects the excitation energy pathway. We studied a system consisting of a planar gold nanoparticle (AuNP) array deposited at the surface of a semiconducting polymer thin film (P3HT). We observed heat transfer from laser pulse excited AuNPs into the P3HT, which was evidenced as a long-living thermochromic effect on transient optical absorption. By modeling of the ultrafast kinetics of exciton population evolution, we determined that their decay was caused by their mutual annihilation. The decay rate was controlled by a phonon-assisted one-dimensional diffusion mechanism with a diffusion constant of 2.2 nm ps. The transferred heat resulted in an increase of the diffusion constant by a factor of almost 2, compared to the control system of P3HT without AuNPs. These results are of practical use for the design of plasmon-enhanced optoelectronic devices.

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Section: Singlet Exciton Recombinationmentioning

confidence: 95%

Phonons spreading from laser-heated gold nanoparticle array accelerate diffusion of excitons in an underlying polythiophene thin film

Rais

Menšı́k

Paruzel

et al. 2017

Phys. Chem. Chem. Phys.

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“…Previous studies investigated nanoparticle polymer compounds or cluster deposition methods on polymers. 8,9 The deposition of metal clusters on polymer surfaces is nowadays a common method to prepare electrodes, contacts, or multilayer structures. 10−13 Several studies have investigated the behavior during growth of such composites in the case of selected model systems.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Especially, the metal electrode formation with minimal material usage on application-oriented polymers needs to be investigated. Previous studies investigated nanoparticle polymer compounds or cluster deposition methods on polymers. , The deposition of metal clusters on polymer surfaces is nowadays a common method to prepare electrodes, contacts, or multilayer structures. − Several studies have investigated the behavior during growth of such composites in the case of selected model systems. − As an example, sputter-deposited gold tends to grow in a dense disordered arrangement of spheroidal clusters at the interface of amorphous homopolymer thin films such as polystyrene (PS) and primarily interacts with itself and rather less with the polymer template. , Löhrer et al followed in situ the gold electrode sputter deposition on low-band-gap polymers used in OPVs . In this study, we focus on the cluster formation by self-assembly during metal sputter deposition on application-oriented polymers.…”

Section: Introductionmentioning

confidence: 99%

Selective Silver Nanocluster Metallization on Conjugated Diblock Copolymer Templates for Sensing and Photovoltaic Applications

Gensch

Schwartzkopf

Brett

et al. 2021

ACS Appl. Nano Mater.

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Polymer−metal composite films with nanostructured metal and/or polymer interfaces show a significant perspective for optoelectronic applications, for example, as sensors or in organic photovoltaics (OPVs). The polymer components used in these devices are mostly nanostructured conductive polymers with conjugated π-electron systems. Enhanced OPV's power conversion efficiencies or sensor sensitivity can be achieved by selective metal deposition on or into polymer templates. In this study, we exploit time-resolved grazing-incidence X-ray scattering to observe the metal−polymer interface formation and the cluster crystallite size in situ during silver (Ag) sputter deposition on a poly(3-hexylthiophene-2,5-diyl)-b-poly(methyl methacrylate) (PMMA-b-P3HT) template. We compare the arising nanoscale morphologies with electronic properties, determine Ag growth regimes, and quantify the selective Ag growth for the diblock copolymer (DBC) template using the corresponding homopolymer thin films (P3HT and PMMA) as a reference. Hence, we are able to describe the influence of the respective polymer blocks and substrate effects on the Ag cluster percolation: the percolation threshold is correlated with the insulator-to-metal transition measured in situ with resistance measurements during the sputter deposition. The Ag cluster percolation on PMMA-b-P3HT starts already on the network of the hexagonal P3HT domain before a complete metal film covers the polymer surface, which is complemented by microscopic measurements. In general, this study demonstrates a possible method for the selective Ag growth as a scaffold for electrode preparation in nanoelectronics and for energy harvesting applications.

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“…The identity of all synthesized AgNPs of the reactions using 10, 20 and 40 mg DNA was further analyzed by SEAD-TEM and HR-TEM. The SEAD-TEM patterns of all synthesized AgNPs demonstrated four diffraction rings, which were indexed as [111], [200], [220] and [311] planes ( Figure 4(A-C)), well corresponding to the Bragg's planes of face-centred cubic (fcc) structure of silver [38]. These concentric rings revealed that the synthesized AgNPs were polycrystalline in nature.…”

Section: Characterization Of the Synthesized Agnpsmentioning

confidence: 99%

Light emitting diode irradiation induced shape conversion of DNA-capped silver nanoparticles and their antioxidant and antibacterial activities

Sritong

Chumsook

Siri

2018

Artificial Cells, Nanomedicine, and Biotechnology

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Due to size- and shape-dependent properties, a shape-controlled synthesis of silver nanoparticles (AgNPs) is one of the research challenging topics for their production and potential applications. This work reported the simple eco-friendly syntheses of different shaped AgNPs controlled by the plasmid DNA content and light emitting diodes (LEDs) irradiation. The synthesized AgNPs appeared as yellow, orange and green colloidal AgNPs, which transmission electron microscope (TEM) images revealed their different shapes; spherical AgNPs, a mixture of spherical and hexagonal AgNPs, and a mixture of spherical, hexagonal and corner-truncated triangle AgNPs, respectively. The average sizes of spherical, hexagonal and corner-truncated triangle AgNPs in the green colloidal solution were 12.32 ± 2.22, 23.03 ± 6.62 and 15.84 ± 4.31 nm, respectively. The analyses of X-ray diffraction, selected area electron diffraction and high-resolution TEM indicated the crystalline nature of the synthesized particles as the face-centred cubic silver. All synthesized AgNPs exhibited antioxidant activities similarly, whereas the yellow colloidal AgNPs exhibited the strongest antibacterial activity against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus as compared with the green and orange colloidal AgNPs.

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Photocurrent enhancement in polythiophene doped with silver nanoparticles

Cited by 14 publications

References 32 publications

Phonons spreading from laser-heated gold nanoparticle array accelerate diffusion of excitons in an underlying polythiophene thin film

Phonons spreading from laser-heated gold nanoparticle array accelerate diffusion of excitons in an underlying polythiophene thin film

Selective Silver Nanocluster Metallization on Conjugated Diblock Copolymer Templates for Sensing and Photovoltaic Applications

Light emitting diode irradiation induced shape conversion of DNA-capped silver nanoparticles and their antioxidant and antibacterial activities

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