Conductivity Enhancement of PEDOT/PSS Films by Solvent Vapor Treatment

Jikei, Mitsutoshi; Yamaya, Takahiro; Uramoto, Shintaro; Matsumoto, Kazuya

doi:10.5188/ijsmer.20.158

Cited by 14 publications

(9 citation statements)

References 6 publications

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“…Another effect of solvent vapor treatment is to improve the electrical conductivity of the thin-film; this process is known as polar solvent vapor annealing (PVSA) treatment [32] . The most commonly used solvents in PVSA treatment include dimethyl sulfoxide (DMSO), ethylene glycol (EG), N-methyl-2-pyrrolidone (NMP), N,N-dimethyl formamide (DMF), and methanol [ 33 , 34 ]. In this paper, the effect of certain different solvents commonly used in PVSA are investigated, with the aim of improving the mechanical strength of PVA nanofiber mats.…”

Section: Introductionmentioning

confidence: 99%

Solvent vapor treatment improves mechanical strength of electrospun polyvinyl alcohol nanofibers

Rianjanu

Kusumaatmaja

Suyono

et al. 2018

Heliyon

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Electrospun nanofibers of polyvinyl alcohol (PVA) have poor mechanical strength. As such their use has often been avoided, particularly in applications that require high mechanical properties. The objective of this study is to increase the mechanical properties of PVA nanofiber mats via physical crosslinking with solvent vapor treatment using organic solvents, dimethyl sulfoxide (DMSO), N, N-dimethyl formamide (DMF), and methanol. The effect of solvent vapor treatment on PVA nanofibers is clearly observed by scanning electron microscope (SEM). The tensile strength increased by over 60%, 90%, and 115% after solvent vapor treatment with DMF at a temperature of 40 °C for 2 h, 4 h, and 8 h, respectively, compared to untreated PVA nanofibers. In addition, Young's modulus of PVA nanofiber mats also increased after DMF treatment. As a comparison, DMSO and methanol were also used in solvent vapor treatment because of differences in their polymer-solvent affinity. Results showed that the highest improvement (100%) in mechanical strength was obtained using DMF. This study shows that solvent vapor treatment offers a simple and inexpensive method that provides excellent results and is a promising alternative treatment for use in increasing the mechanical properties of electrospun nanofibers.

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Section: Introductionmentioning

confidence: 99%

Solvent vapor treatment improves mechanical strength of electrospun polyvinyl alcohol nanofibers

Rianjanu

Kusumaatmaja

Suyono

et al. 2018

Heliyon

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“…Commercially available at remarkably low cost and extremely versatile for both electrochemical storage and energy conversion devices, PEDOT:PSS has become an essential material for the organic electronic device industry . Among other conductive polymers, PEDOT:PSS is a material of choice for energy storage and conversion being capacitive, highly stable and able to reach remarkable conductivity when cunningly tuned . Over the past ten years, numerous studies have been performed using PEDOT:PSS as electrode material for large scale supercapacitor electrodes for flexible integrated applications, free-standing film devices and hydrogel electrolyte-based electrochemical capacitors .…”

Section: Introductionmentioning

confidence: 99%

One Step Deposition of PEDOT–PSS on ALD Protected Silicon Nanowires: Toward Ultrarobust Aqueous Microsupercapacitors

Valero

Méry

Gaboriau

et al. 2018

ACS Appl. Energy Mater.

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Herein, we propose a fast and simple deposition method of a highly robust pseudocapacitive material based on a straightforward drop-cast of a commercial PEDOT:PSS solution onto 3 nm alumina-coated silicon nanowires. The composite material produced (PPSS-A@ SiNWs) displays, remarkable capacitive behavior with a specific capacitance of 3.4 mF•cm −2 at a current density of 2 A•g −1 in aqueous Na 2 SO 4 electrolyte. Moreover microsupercapacitor (MSC) devices based on this material exhibits outstanding lifetime capacity retaining 95% of its initial capacitance after more than 500 000 cycles at a current density of 0.5 A•g −1 , a specification which exceeds by far most of the stability of conducting polymers previously reported in the literature. In term of pure energy storage performances, the system is able to reach excellent specific energy and power values of 8.2 mJ•cm −2 and of 4.1 mW•cm −2 , respectively, at a high current density of 2 A•g −1 . Results are systematically compared to both the state-of-the-art silicon based aqueous on-chip supercapacitors and to that of the pristine alumina-coated silicon nanowires (A@SiNWs) to highlight the contribution of the conductive PEDOT:PSS polymer (PPSS in this study). Hence, the aforementioned one-step deposition represents a simple, cheap and scalable method to thoroughly increase the cycling stability of a well-known conductive polymer, PEDOT−PSS, while drastically increasing the electrochemical performances of an existing technology, the Si NW-based MSCs using aqueous electrolytes.

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“…The electrical conductivity of polymers typically is poor ( [14]. A lot of methods have been applied for improving the electrical conductivity of polymers, such as blend with another conductive polymer [15], [16], dipping on low concentrated solvent [17], co-solvent addition [18], change of solvent [19], [20], and solvent vapour treatment [21], [22].…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity Improvement of Polyvinyl Alcohol Nanofiber by Solvent Vapour Treatment

Chotimah

Rianjanu

Winardianto

et al. 2016

International Journal on Advanced Science, Engineering and Information Technology

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The electrical conductivity of polyvinyl alcohol (PVA) electrospun nanofibers is naturally low. For an electrical device application, it requires high enough conductivity. The objective of this study is to improve the electrical conductivity of electrospun PVA nanofibers with and without poly (3,4-ethylenedioxytriophene): polystyrene sulfonate (PEDOT:PSS) by exposure polar solvent of dimethyl sulfoxide (DMSO). For this purpose, the nanofibers were deposited on a substrate with patterned electrodes. The distance between two electrodes is 2 mm. The sheet resistance of the PVA nanofibers was measured by using two-point probe connected to a source measurement unit of Keithley SMU-2400. As a result, the conductivity of PVA electrospun nanofibers increases from 0.03 μS/cm to 1.20 μS/cm by increasing the PVA concentration from 8 to 10 wt%. More significant improvement is also achieved by mixing PVA and PEDOT:PSS to be 110 μS/cm after being exposure DMSO. This improvement has been confirmed using the scanning electron microscopy (SEM) images, where a solvent-induced fusion occurs at the nanofiber junction points after DMSO treatment. The stability of electrical conductivity, however, of electrospun PVA nanofibers is better than that of electrospun PVA/PEDOT:PSS nanofibers after exposure DMSO.

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Conductivity Enhancement of PEDOT/PSS Films by Solvent Vapor Treatment

Cited by 14 publications

References 6 publications

Solvent vapor treatment improves mechanical strength of electrospun polyvinyl alcohol nanofibers

Solvent vapor treatment improves mechanical strength of electrospun polyvinyl alcohol nanofibers

One Step Deposition of PEDOT–PSS on ALD Protected Silicon Nanowires: Toward Ultrarobust Aqueous Microsupercapacitors

Electrical Conductivity Improvement of Polyvinyl Alcohol Nanofiber by Solvent Vapour Treatment

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