Dispersion control of Ag nanoparticles in bulk-heterojunction for efficient organic photovoltaic devices

Woo, Yu Jin; Park, Keum Hwan; Park, O. Ok; Wang, Dong Hwan

doi:10.1016/j.orgel.2014.10.043

Cited by 11 publications

(5 citation statements)

References 41 publications

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“…12,13,22 To place the AgNPs on the organic active layer of P3HT:PCBM (Figure 1), it is crucial to control the hydrophobicity of the AgNPs. 34,41 The AgNPs were functionalized with PS-SH in DMF to achieve hydrophobicity. DMF was chosen because both AgNPs and PS-SH are miscible in DMF to allow PS-SH to react with AgNPs.…”

Section: ■ Resultsmentioning

confidence: 99%

“…43−45 Previously, Ag nanospheres functionalized by PS were successfully added into the active layer with controlled dispersion to obtain effective plasmonic enhancements. 41 The polystyrene layer provides an insulating layer and prevents parasitic charge recombination. 40 However, to our knowledge, it is unknown how two-dimensional Ag nanoplates on the active layer affect the OPV performance.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In addition to the location, nanoparticle dispersion within OPV devices is also crucial to avoid performance degradation. ,,, Coating nanoparticles with high-molecular-weight polymers ,− is a facile method for effective nanoparticle dispersion and deterrence of charge carrier recombination. The polymer chains prevent detrimental aggregation of nanoparticles due to steric repulsion. − Because thiol has an affinity for and reacts with the Ag nanoparticle surface, thiol-terminated polystyrene (PS-SH) can be “grafted-to” the Ag nanoparticles and create a hydrophobic polystyrene (PS) layer surrounding the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, Ag nanospheres functionalized by PS were successfully added into the active layer with controlled dispersion to obtain effective plasmonic enhancements . The polystyrene layer provides an insulating layer and prevents parasitic charge recombination .…”

Section: Introductionmentioning

confidence: 99%

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Critical Role of Polystyrene Layer on Plasmonic Silver Nanoplates in Organic Photovoltaics

Metzman

Khan

Magill

et al. 2019

ACS Appl. Energy Mater.

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Plasmonic nanoparticles create large local electric field enhancements in organic photovoltaics (OPVs), substantially enhance the absorption of light, and consequently improve the device efficiency. In this report, anisotropic Ag nanoplates (AgNPs) were functionalized by thiol-terminated polystyrene (PS-SH) to yield polystyrene-functionalized Ag nanoplates (PS-AgNPs). The PS-AgNPs were spin-coated directly on the OPV active layer, poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl C61 butyric acid methyl ester (P3HT:PCBM). A systematic variation of the PS-AgNP solution concentration correlated to different nanoparticle densities on the active layer. The localized surface plasmon resonance (LSPR) of the PS-AgNPs enhanced the light absorption of the active layer, which directly contributed to an increase in exciton yield, demonstrated by the increased photoluminescence emission intensities in P3HT films. In addition, incorporation of the PS-AgNPs decreased the series resistance and increased the photocurrent of the devices. In devices with PS-AgNP at a concentration of 0.57 nM, the power conversion efficiency was 32% higher than the devices without the PS-AgNPs. Without the polystyrene functionalization, however, the AgNPs severely deteriorated the performance of the OPV devices regardless of the nanoparticle concentration.

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Section: ■ Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Critical Role of Polystyrene Layer on Plasmonic Silver Nanoplates in Organic Photovoltaics

Metzman

Khan

Magill

et al. 2019

ACS Appl. Energy Mater.

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“…Metallic silver (Ag) nanoparticles (NPs) are effective in organic active thin film due to their scattering performance, which lead to increase of the light absorption within an active layer [23][24][25][26][27][28][29][30][31][32]. Thus, the insertion of Ag NPs with optimized ratio into an active layer of the devices can significantly enhance the absorption, and increase the photo-generated charge carriers.…”

Section: Introductionmentioning

confidence: 99%

Enhanced performance of layer-evolved bulk-heterojunction solar cells with Ag nanoparticles by sequential deposition

Ahn

Jang

Park

et al. 2015

Organic Electronics

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Versatile Approach to Self‐Assembly of Surface Modified Nanoparticles into SERS‐Active Nanoclusters

Zhang,

Liu,

et al. 2024

Part & Part Syst Charact

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A versatile method is invented to self‐assemble gold nanoparticles (GNPs) into nanoclusters (NCs) of various morphologies. By storing the particles in toluene, a highly non‐polar solvent, under conditions that ensure particle stability, the success rate of subsequent assembly can be enhanced. Additionally, conducting particle self‐assembly at a stirring speed of 200 rpm allows the NCs to maintain a spherical shape. The relative standard deviation (RSD) of Raman spectral peaks of multiple NCs used as surface‐enhanced Raman spectroscopy (SERS) substrates is calculated to be less than 10%, effectively addressing the issue of low repeatability when using NCs as SERS substrates. Furthermore, even at an analyte concentration reduced to 10−9 m, a SERS characteristic peak intensity of approximately 2 × 103 is measurable, demonstrating the high sensitivity of the assembled structures. Finally, by detecting SERS signals from NCs of varying sizes, the intensities of characteristic peaks tend to converge, eliminating the influence of morphology and size on SERS detection.

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Dispersion control of Ag nanoparticles in bulk-heterojunction for efficient organic photovoltaic devices

Cited by 11 publications

References 41 publications

Critical Role of Polystyrene Layer on Plasmonic Silver Nanoplates in Organic Photovoltaics

Critical Role of Polystyrene Layer on Plasmonic Silver Nanoplates in Organic Photovoltaics

Enhanced performance of layer-evolved bulk-heterojunction solar cells with Ag nanoparticles by sequential deposition

Versatile Approach to Self‐Assembly of Surface Modified Nanoparticles into SERS‐Active Nanoclusters

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