The effect of the PEDOT:PSS surface energy on the interface potential barrier

Petrosino, Mario; Rubino, Alfredo

doi:10.1016/j.synthmet.2011.10.006

Cited by 34 publications

(29 citation statements)

References 14 publications

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“…The growth rate of Ag nanoparticles on PEDOT:PSS is slower than on the glass substrate due to the differences in surface energy. The small surface energy of PEDOT:PSS (40-75 mJ/m 2 ) (Han et al, 2011;Petrosino and Rubino, 2012) compared to glass (2000-4000 mJ/m 2 ) (Kinloch, 1987) facilitates the lower growth rate of Ag (surface tension: 800 mN/m) on PEDOT:PSS rather than on glass substrates. The estimated Ag nanoparticle peak to peak heights were 5.7 nm, 9 nm and 12.5 nm and the coverage or areal densities were 8%, 30% and 50% respectively.…”

Section: Resultsmentioning

confidence: 99%

Plasmonic Ag nanoparticle interlayers for organic photovoltaic cells: An investigation of dielectric properties and light trapping

2015

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Section: Resultsmentioning

confidence: 99%

Plasmonic Ag nanoparticle interlayers for organic photovoltaic cells: An investigation of dielectric properties and light trapping

2015

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“…In a previous study, the critical surface energy (γ c ) of tetraarylphosphonium PELs ( FL1‐3 , ) was reported to range from 58.2 to 72.8 mJ m −2 . This range extends to the γ c of poly(3,4‐ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS; 70 mJ m −2 ), a polymer mixture that finds broad utility in organic optoelectronic devices. Given the importance of interface effects in organic electronic devices, the influence of backbone and side chain structure on γ c was investigated for the LX and LO polymers.…”

Section: Resultsmentioning

confidence: 99%

Intercation spacing and side chain effects on phosphonium polymers: Thermal, supramolecular, and bactericidal properties

Yang

Bedford

Wan

et al. 2018

J. Polym. Sci. Part A: Polym. Chem.

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The properties of phosphonium polyelectrolytes (PELs) were evaluated in an effort to assess the influence of both side chain and main chain composition. The influence of side chain was examined by comparing properties of a series of PELs having hydrophobic octyloxy side chains to those of structural analogues lacking the side chains. The influence exerted by backbone flexibility/length of spacer between charges was revealed by comparing properties of two series of polymers with a variable number of methylene units between phosphonium charge‐bearing sites. Side chain composition and spacing between phosphonium units lead to noteworthy influence on thermal stability, glass transition, and crystallinity. The molecular structure of PELs also correlates with trends in film morphology and critical surface energy of PEL dip‐cast films. Sensitivity of morphology to humidity or water in the casting solvent was observed. Supramolecular assembly of films via layer‐by‐layer deposition of PELs alternating with anionic polythiophene derivative layers was also undertaken. The linearity of film growth, amount of material deposited in each bilayer, polycation:polyanion ratio, and film roughness all show noteworthy trends that depend on both the presence/absence of side chains and on spacing between ionic centers. The relationship between side chain and spacer on bactericidal activity against Staphylococcus aureus and Escherichia coli was assessed. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 24–34

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“…The CuIinduced vertical phase separation implies a unique interaction between donor:acceptor components and CuI film, which might partially be due to much lower surface energy of hydrophobic CuI (26 mJ/m 2 ) as compared with hydrophilic PEDOT:PSS (73 mJ/m 2 ) HTL. [46,47]. The apparent reduction of lamellar texture should therefore not necessarily be interpreted as resulting from a preferred face-on orientation of P3HT on CuI, but perhaps more due to the fact that P3HT crystalline domains are predominantly in the bulk and near the surface of the BHJ, and are therefore more randomly oriented than if they were to grow on the flat surface of the substrate.…”

Section: Discussion Of the Templating Effect Of Cui On The Solution-pmentioning

confidence: 99%

Highly efficient organic solar cells based on a robust room-temperature solution-processed copper iodide hole transporter

et al. 2015

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Achievin Q3 g high performance and reliable organic solar cells hinges on the development of stable and energetically suitable hole transporting buffer layers in tune with the electrode and photoactive materials of the solar cell stack. Here we have identified solution-processed Copper(I) iodide (CuI) thin films with low-temperature processing conditions as an effective hole-transporting layer (HTL) for a wide range of polymer:fullerene bulk heterojunction (BHJ) systems. The solar cells using CuI HTL show higher power conversion efficiency (PCE) in standard device structure for polymer blends, up to PCE of 8.8%, as compared with poly(3,4-ethylenedioxy-thiophene):poly(styrenesulfonate) (PEDOT:PSS) HTL, for a broad range of polymer:fullerene systems. The CuI layer properties and solar cell device behavior are shown to be remarkably robust and insensitive to a wide range of processing conditions of the HTL, including processing solvent, annealing temperature (room temperature up to 200 1C), and film thickness. CuI is also shown to improve the overall lifetime of solar cells in the standard architecture as compared to PEDOT:PSS. We further demonstrate promising solar cell performance when using CuI as top HTL in inverted device architecture. The observation of uncommon properties, such as photoconductivity of CuI and templating effects on the BHJ layer formation, is also discussed. This study points to CuI as being a good candidate to replace PEDOT:PSS in solution-processed solar cells thanks to the facile implementation and demonstrated robustness of CuI thin films. .sa (A. Amassian). Nano Energy (]]]]) ], ]]]-]]]Please cite this article as: K. Zhao, et al., Highly efficient organic solar cells based on a robust room-temperature solution-processed Copper iodide hole transporter, Nano Energy (2015), http://dx.

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The effect of the PEDOT:PSS surface energy on the interface potential barrier

Cited by 34 publications

References 14 publications

Plasmonic Ag nanoparticle interlayers for organic photovoltaic cells: An investigation of dielectric properties and light trapping

Plasmonic Ag nanoparticle interlayers for organic photovoltaic cells: An investigation of dielectric properties and light trapping

Intercation spacing and side chain effects on phosphonium polymers: Thermal, supramolecular, and bactericidal properties

Highly efficient organic solar cells based on a robust room-temperature solution-processed copper iodide hole transporter

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