Improved charge carrier transport in ultrathin poly(3-hexylthiophene) films via solution aggregation

Janasz, Łukasz; Chlebosz, Dorota; Gradzka, Marzena; Zaja̧czkowski, Wojciech M.; Marszałek, Tomasz; Müllen, Kläus; Ulański, Jacek; Kiersnowski, Adam; Pisula, Wojciech

doi:10.1039/c6tc02142e

Cited by 48 publications

(50 citation statements)

References 36 publications

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“…7 . In recent studies, DSC crystallinity calculation has largely been used to validate X-ray diffraction (XRD) results [ 40 , 41 ]. The authors' previous study [25] showed that PVA nanofiber has a low degree of crystallinity, and this agrees with XRD results.…”

Section: Resultsmentioning

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: Resultsmentioning

confidence: 99%

Solvent vapor treatment improves mechanical strength of electrospun polyvinyl alcohol nanofibers

Rianjanu

Kusumaatmaja

Suyono

et al. 2018

Heliyon

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“…39,40 Films obtained from preaggregated solutions exhibit a fibrous microstructure, even in the case of ultrathin films spin-coated at very high rotation speeds. 41 This polymer preaggregation enables high mobilities in ultrathin films. Therefore, a thin fibrous P3HT film (Fig.…”

Section: Bilayer Film Structurementioning

confidence: 99%

Ultrathin film heterojunctions by combining solution processing and sublimation for ambipolar organic field-effect transistors

et al. 2018

Self Cite

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“…Semiconducting conjugated polymers (CPs) offer a viable alternative due to their facile solution processability, flexibility, and tailor‐made synthetic versatility . However, molecular self‐assembly driven and morphology‐dependent device performances require critical attention to the judicious selection of suitable thin‐film fabrication techniques . Charge transport in CPs essentially involves intramolecular (within conjugated backbone), intermolecular (through π‐π stacking of adjacent, stacked, conjugated backbones), and intermolecular interdomain hopping …”

Section: Introductionmentioning

confidence: 99%

Rapid Formation and Macroscopic Self‐Assembly of Liquid‐Crystalline, High‐Mobility, Semiconducting Thienothiophene

Pandey

Gowda

Nagamatsu

et al. 2018

Adv Materials Inter

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A synergistic approach to enhance charge‐carrier transport in organic semiconductors along with facile solution processing and high performance is crucial for the advancement of organic electronics. The floating film transfer method (FTM) is used as a facile and cost‐effective method for the fabrication of large‐scale, uniform, highly oriented poly[2,5‐bis(3‐tetradecylthiophen‐2‐yl)thieno[3,2‐b]thiophene] (pBTTT C‐14) films under ambient conditions. Utilization of such oriented films as the active semiconducting layer in organic field‐effect transistors (OFETs) results in highly anisotropic charge‐carrier transport. Highly oriented, FTM‐processed pBTTT C‐14 thin films are characterized by polarized electronic absorption and Raman spectroscopy, atomic force microscopy, out‐of‐plane X‐ray diffraction, and grazing incident X‐ray diffraction (GIXD) measurements. The GIXD data indicate an edge‐on orientation, which is highly desirable for planar devices such as OFETs. OFETs built using the oriented films show a mobility anisotropy of 10 and the highest mobility is 1.24 cm2 V−1 s−1 along the backbone orientation, which is among the highest value reported for this class of materials using a similar device configuration.

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Improved charge carrier transport in ultrathin poly(3-hexylthiophene) films via solution aggregation

Abstract: Field-effect transistors based on poly(3-hexylthiophene) (P3HT) ultrathin films exhibit maximum charge carrier mobilities of up to 0.1 cm2 V−1 s−1.

Cited by 48 publications

References 36 publications

Solvent vapor treatment improves mechanical strength of electrospun polyvinyl alcohol nanofibers

Solvent vapor treatment improves mechanical strength of electrospun polyvinyl alcohol nanofibers

Ultrathin film heterojunctions by combining solution processing and sublimation for ambipolar organic field-effect transistors

Rapid Formation and Macroscopic Self‐Assembly of Liquid‐Crystalline, High‐Mobility, Semiconducting Thienothiophene

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