Near 5% DMSO is the best: A structural investigation of PEDOT: PSS thin films with strong emphasis on surface and interface for hybrid solar cell

Mahato, Somnath; Puigdollers, J.; Voz, C.; Mukhopadhyay, Mala; Mukherjee, M.; Hazra, S.

doi:10.1016/j.apsusc.2019.143967

Cited by 52 publications

(45 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lower binding energy peak at 162.0–166.5 eV indicates the sulfur in the thiophene ring of PEDOT while the higher binding energy peak at 167.6–173.0 eV refers to the sulfur in the sulphonic acid of PSS. [ 55 ] For H:PEDOT:PSS, the intensity of peak assigning to PEDOT is remarkably strengthened while the intensity for PSS peak is largely decreased, which is probably related to the significant reduction of insulating PSS component in the PEDOT:PSS organic film. [ 32 ] Furthermore, the S 2p binding energy of PEDOT shifts toward a lower binding energy level, owing to the replacement of polyanions PSS by HSO 4 − ions or SO 4 2− ions or both of them during an ion exchange process.…”

Section: Resultsmentioning

confidence: 99%

Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors

Deng

Liu

et al. 2021

Small

View full text Add to dashboard Cite

In order to satisfy the growing requirements of wearable electronic devices, 1D fiber‐shaped devices with outstanding sensitivity, flexibility, and stability are urgently needed. In this study, a novel inorganic‐organic heterojunction fibrous photodetector (FPD) based on poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) and highly ordered TiO2 nanotube array is fabricated, which endows a high responsivity, large external quantum efficiency, and fast response speed at 3 V bias. To further ameliorate its performance in the self‐powered mode, a facile acid treatment is adopted and the assembled H‐PEDOT:PSS/TiO2 FPD demonstrates outstanding self‐powered properties with ≈3000% responsivity enhancement (161 mA W−1 at 0 V under 365 nm irradiation, photocurrent enhancement of ≈50 times) compared with the untreated device. It is found that the concentrated H2SO4 post‐treatment helps decrease the tube wall thickness of TiO2 and partially removes the insulated PSS component in PEDOT:PSS, leading to enhanced conductivity and facilitated charge transportation, and thereby superb responsivity/photocurrent enhancement of self‐powered H‐PEDOT:PSS/TiO2 FPD. This low‐cost and high‐performance self‐powered FPD shows high potential for applications in wearable electronic devices.

show abstract

Section: Resultsmentioning

confidence: 99%

Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors

Deng

Liu

et al. 2021

Small

View full text Add to dashboard Cite

show abstract

“…The use of polar organic solvents such as ethylene glycol (EG), methanol, and dimethylsulfoxide (DMSO) has been shown to increase the conductivity of PEDOT:PSS thin films . According to the literature, DMSO results in a better increase in the conductivity of PEDOT:PSS . However, the mechanism by which the organic solvent acts on the conductivity of PEDOT:PSS is still debated.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we used commercially available PEDOT:PSS as a first coating to provide textile yarns with a conducting layer that will be used to perform a subsequent electropolymerization of actuating PPy to fabricate yarn actuators for textiles. The performance and deposition of such PEDOT:PSS conducting layer has been investigated regarding the number of coatings and the addition of DMSO at different concentrations (the most successful additive so far to improve PEDOT:PSS conductivity) to get high‐conducting PEDOT:PSS and high‐strain yarn actuators. Using PEDOT:PSS from solution instead of as previously vapor phase polymerized PEDOT, will simplify the coating procedure, which, in addition, is compatible to large‐scale production methods used in textile manufacturing as it is similar to currently used dyeing methods…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Conductivity of the Poly(3,4‐ethylenedioxythiophene)‐Poly(styrenesulfonate) Coating and Its Effect on the Performance of Yarn Actuators

Escobar-Teran

Martínez

Persson

et al. 2020

Advanced Intelligent Systems

View full text Add to dashboard Cite

Nonconductive commercial viscose yarns have been coated with a commercial conducting poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) (PEDOT:PSS) layer providing electrical conductivity which allowed a second coating of the electroactive conducting polymer polypyrrole through electropolymerization to develop textile yarns actuators. To simplify the PEDOT coating process and at the same time make this process more suitable for application in industry, a new coating method is developed and the properties of the PEDOT‐PSS conducting layer is optimized, paying attention on its effect on the actuation performance. The effect of the concentration of an additive such as dimethylsulfoxide (DMSO) on actuation, and of PEDOT:PSS layers, is investigated. Results show that on improving this conducting layer, better performance than previously developed yarn‐actuators is obtained, with strains up to 0.6%. This study provides a simple and efficient fabrication method toward soft, textile‐based actuators for wearables and assistive devices with improved features.

show abstract

“…Compared with PEDOT:PSS:DMSO film, the hybrid system also shows a different electron density distribution at the film/air interface region, which indicates a restructuring of the film surface (even smoother) in line with our AFM observation. [34] Besides, the lower electron density at the bottom part suggests that PSS migration on the top region of the film induces formation of a bottom region with more densely packed PEDOT crystallites, resulting in a more coherent carrier charge transport path. This positive effect on the electrical conductivity will compensate for the lowering in the doping level of the PEDOT chains, [35] effectively limiting the drop in σ observed for PEDOT:PSS:DMSO:SnO x -NPs (Figure 2b) and even enhancing slightly the conductivity in PEDOT:PSS:SnO x -NPs (Figure 2a).…”

Section: Resultsmentioning

confidence: 99%

Boosting the Thermoelectric Properties of PEDOT:PSS via Low‐Impact Deposition of Tin Oxide Nanoparticles

Dong

Gerlach

Koutsogiannis

et al. 2021

Adv Elect Materials

View full text Add to dashboard Cite

materials' efficiency to convert heat into electricity remains still quite low in the low-temperature range. To quantify the TE performances, the figure of merit zT is introduced, which is described by the equation = σ κ zT S T 2 , [4,5] where σ is the electrical conductivity, S the Seebeck coefficient, κ the thermal conductivity, and T the absolute temperature. Due to the intrinsically low thermal conductivity of polymeric TE materials, the power factor, which is described as PF = σS 2 , is the main factor to be improved. [6,7] However, σ and S influence each other and usually in an opposite way, meaning that when one of them increases, the other one will decrease. A large amount of research has been done to probe the relationship between these two variables and to try to improve them. [8][9][10] Poly(3,4-ethylenedioxy thiophene): poly(styrenesulfonate) (PEDOT:PSS, structure shown in Figure 1a) is one of the most studied among polymeric TE materials, being highly stable, easily processable, and showing the best TE properties for this family of materials so far. [11,12] Although various strategies including polar solvents treatment, acids/bases treatment, ionic liquids treatment, inorganic nanomaterials incorporation, etc. have been applied to improve the TE performance of PEDOT:PSS, [7] and PF as high as 380 µW m −1 K −2 can be achieved with the incorporation of 2D SnSe nanosheets, [13] effective and cost-effective methods simple enough that can be used for mass production are still lacking.Here we propose a new method to add "naked" nanoparticles (NPs) to PEDOT:PSS in order to improve its TE properties. The improvement in TE properties is achieved by a reorganization of the film structure induced by the NP addition via a specific interaction with the PSSchains. Key in this work is the use of "naked" NPs. Indeed, Zhang et al. proved the negative effect of the surface layer on inorganic Bi 2 Te 3 when embedded in PEDOT:PSS. [14] To incorporate "naked" inorganic NPs we selected a physical pathway for NP generation, namely spark discharge generation, which is one of the least expensive and most environmentally friendly methods to produce large amounts of NPs. [15,16] A flow of gas (Ar) can be used to carry the generated NPs towards the polymer target (see Figure 1b). Instead of applying the so-called impaction mode, where the NPs impinge vertically on the substrate, an alternative low Poly(3,4-ethylenedioxy thiophene):poly(styrenesulfonate) (PEDOT:PSS) exhibits valuable characteristics concerning stability, green-processing, flexibility, high electrical conductivity, and ease of property modulation, qualifying it as one of the most promising p-type organic conductors for thermoelectric (TE) applications. While blending with inorganic counterparts is considered a good strategy to further improve polymeric TE properties, only a few attempts succeed so far due to inhomogeneous embedding and the non-ideal organicinorganic contact. Here a new strategy to include nanoparticles (NPs) without any ligand termination inside ...

show abstract

Near 5% DMSO is the best: A structural investigation of PEDOT: PSS thin films with strong emphasis on surface and interface for hybrid solar cell

Cited by 52 publications

References 48 publications

Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors

Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors

Enhancing the Conductivity of the Poly(3,4‐ethylenedioxythiophene)‐Poly(styrenesulfonate) Coating and Its Effect on the Performance of Yarn Actuators

Boosting the Thermoelectric Properties of PEDOT:PSS via Low‐Impact Deposition of Tin Oxide Nanoparticles

Contact Info

Product

Resources

About

Near 5% DMSO is the best: A structural investigation of PEDOT: PSS thin films with strong emphasis on surface and interface for hybrid solar cell

Cited by 52 publications

References 48 publications

Dramatic Responsivity Enhancement Through Concentrated H2SO4 Treatment on PEDOT:PSS/TiO2 Heterojunction Fibrous Photodetectors

Dramatic Responsivity Enhancement Through Concentrated H2SO4 Treatment on PEDOT:PSS/TiO2 Heterojunction Fibrous Photodetectors

Enhancing the Conductivity of the Poly(3,4‐ethylenedioxythiophene)‐Poly(styrenesulfonate) Coating and Its Effect on the Performance of Yarn Actuators

Boosting the Thermoelectric Properties of PEDOT:PSS via Low‐Impact Deposition of Tin Oxide Nanoparticles

Contact Info

Product

Resources

About

Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors

Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors