Enhanced photoluminescence of conjugated polymer thin films on nanostructured silver

Griffo, Michael S.; Carter, Sue A.; Holt, Anatol W.

doi:10.1016/j.jlumin.2011.02.040

Cited by 13 publications

(8 citation statements)

References 29 publications

(35 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The image of a profile (Figure 3b) was traced in the topography, which shows a small variation (of the order of 1 nm) in the surface topography of the DGEBA epoxy resin. Figure 4 shows the formation of layers of three-dimensional spherical clusters, after metallization, corresponding to silver nanoparticles in the sense of their plasmonic behavior; this result is consistent with the literature for other polymers [2][3][4][5]8,13,14,23] . The images show little definition of cluster size for layers less than 5 nm, possibly due to the mobility of silver atoms on the surface of the polymer.…”

Section: Spectroscopic Analysissupporting

confidence: 88%

AFM and XRD characterization of silver nanoparticles films deposited on the surface of DGEBA epoxy resin by ion sputtering

et al. 2013

View full text Add to dashboard Cite

Abstract:In this work, silver atoms were deposited by ion sputtering on the surface of diglycidyl ether of bisphenol A (DGEBA) epoxy resin cured at 150 °C for 6 hours in air. The films of DGEBA and its precursors were characterized by Raman spectroscopy to identify the main functional groups and their relationship with the deposited silver atoms. Silver thin films of 5, 10, 15 and 20 nm were deposited on the epoxy resin at room temperature. Both the initial film of DGEBA and the subsequent silver thin film were analyzed by Atomic Force Microscopy (AFM) in the non-contact mode. Silver thin films were also analyzed using X-ray diffraction (XRD) at room temperature. The AFM results showed the formation of silver crystallites on the surface of DGEBA at very low coverage whereas XRD indicated that most of them had their main axis aligned to the normal of the surface. An increase in the coverage led to an increase in the grain size as indicated by AFM. However, XRD results indicated that the crystallite size remained almost constant while the appearance of peaks corresponding to other crystalline orientations suggests the coalescence of the original crystallites and an increase in size of the more dense planes, namely [111].

show abstract

Section: Spectroscopic Analysissupporting

confidence: 88%

AFM and XRD characterization of silver nanoparticles films deposited on the surface of DGEBA epoxy resin by ion sputtering

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Plasmon-resonant metal nanoparticles have been used to enhance the performance of optoelectronic devices such as LEDs, lasers, photodiodes, and biosensors, because the redistribution of electromagnetic field modes around the metal particles enhances absorption, , emission, − and Raman scattering , and even leads to apparent violations of Kasha’s rules of molecular photophysics . In particular, plasmonic nanoparticles are of interest for light management in thin-film solar cells because they can be used to increase the amount of light absorbed in an active semiconductor layer through electromagnetic near-field enhancement, far-field scattering (increase in path length), and plasmonic waveguiding depending on the circumstances. , Plasmonic light harvesting can be beneficial for organic photovoltaics in particular, because many of the current generation of materials exhibit decreasing internal quantum efficiency (IQE) with increasing film thickness. , Recently, the combined effects of incorporating plasmonic metal nanoparticles and a nanostructured metal back electrode resulted in a single-junction organic solar cell featuring a power conversion efficiency of 8.8%, which is among the highest values reported in the literature …”

mentioning

confidence: 99%

Electron Accumulation on Metal Nanoparticles in Plasmon-Enhanced Organic Solar Cells

et al. 2012

View full text Add to dashboard Cite

Plasmonic metal nanoparticles have been used to enhance the performance of thin-film devices such as organic photovoltaics based on polymer/fullerene blends. We show that silver nanoprisms accumulate long-lived negative charges when they are in contact with a photoexcited bulk heterojunction blend composed of poly(3-hexylthiophene)/phenyl-C61-butyric acid methyl ester (P3HT/PCBM). We report both the charge modulation and electroabsorption spectra of silver nanoprisms in solid-state devices and compare these spectra with the photoinduced absorption spectra of P3HT/PCBM blends containing silver nanoprisms. We assign a previously unidentified peak in the photoinduced absorption spectra to the presence of photoinduced electrons on the silver nanoprisms. We show that coating the nanoprisms with a 2.5 nm thick insulating layer can completely inhibit this charging. These results may inform methods for limiting metal-mediated losses in plasmonic solar cells.

show abstract

“…Metallic nano-ink is the most researched and used ink due to its excellent electrical conductivity [ 13 ]. Silver nanoparticles (AgNPs) have the properties of most metal nanoparticles, such as excellent chemical stability, adsorption, antibacterial and optical properties [ 14 , 15 , 16 ]. In addition, compared with other non-metallic nanomaterials, AgNPs also have better electrical properties [ 17 , 18 ], which makes them increasingly important for applications in microelectronics [ 19 ], optoelectronics [ 20 ], medicine [ 21 , 22 ], catalysis [ 23 , 24 ] and biological sensing [ 6 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Bimodal Silver Nanoparticle Ink Based on Liquid Phase Reduction Method

Zhang

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

Improving the conductivity of metal particle inks is a hot topic of scientific research. In this paper, a method for preparing metal-filled particles was proposed. By adding filled particles to the ink, the size distribution of particles could be changed to form a bimodal distribution structure in accordance with Horsfield’s stacking model. The filling particles had small volume and good fluidity, which could fill the gaps between the particles after printing and improve its electrical conductivity without significantly changing the metal solid content in the ink. Experimental results show that the silver content of the ink slightly increased from 15 wt% to 16.5 wt% after adding filled particles. However, the conductivity of the ink was significantly improved, and after sintering, the resistivity of the ink decreased from 70.2 μΩ∙cm to 31.2 μΩ∙cm. In addition, the filling particles prepared by this method is simple and has a high material utilization rate, which could be applied to the preparation of other kinds of metal particle inks.

show abstract

Enhanced photoluminescence of conjugated polymer thin films on nanostructured silver

Cited by 13 publications

References 29 publications

AFM and XRD characterization of silver nanoparticles films deposited on the surface of DGEBA epoxy resin by ion sputtering

AFM and XRD characterization of silver nanoparticles films deposited on the surface of DGEBA epoxy resin by ion sputtering

Electron Accumulation on Metal Nanoparticles in Plasmon-Enhanced Organic Solar Cells

Preparation of Bimodal Silver Nanoparticle Ink Based on Liquid Phase Reduction Method

Contact Info

Product

Resources

About