Simple push coating of polymer thin-film transistors

Ikawa, Mitsuhiro; Yamada, Toshikazu; Matsui, Hiroyuki; Minemawari, Hiromi; Tsutsumi, Jun; Horii, Yuichi; Chikamatsu, Masayuki; Azumi, Reiko; Kumai, Reiji; Hasegawa, Tatsuo

doi:10.1038/ncomms2190

Cited by 118 publications

(101 citation statements)

References 28 publications

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“…[61][62][63][64][65][66][67] Figure 4a shows a photograph of the as-prepared P3HT film transferred to vertical AuNWs/PDMS electrodes. To investigate the charge injection between our electrodes and p-type organic semiconductors, we integrated P3HT thin films with the AuNWs/PDMS electrodes to form metal-organic semiconductor contacts.…”

mentioning

confidence: 99%

Patterning Vertically Grown Gold Nanowire Electrodes for Intrinsically Stretchable Organic Transistors

Zhu

Gong

Lin

et al. 2018

Adv Elect Materials

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facile fabrication. [15][16][17][18] Metal nanowires (gold, silver, copper, etc.) [19][20][21][22][23][24] and carbon based materials such as carbon nanotubes (CNTs) and graphene, [25][26][27][28][29][30][31] have received tremendous research attention in constructing intrinsically stretchable electrodes for organic electronics.Among those choices, raw materials cost of gold may not be the lowest, but it offers superior advantages in biomedical applications of wearable and implantable electronics, due to the attributes including high conductivity, mechanical robustness, chemical inertness, and biocompatibility. [32][33][34] For example, the conductivity of gold is two orders higher than carbon based materials. [35] Also, gold has been known to be anti-oxidative and anti-corrosive, while silver or copper fails in maintaining a long-term stability in complex body fluidic environments. Furthermore, the work function of gold is close to the HOMO levels of many p-type organic semiconductors such as poly(3-hexylthiophene) (P3HT) and pentacene, offering small hole-injection barriers and low contact resistance at metal-organic semiconductor interfaces. [36][37][38][39][40] Although little research attention had been paid to improving contact resistance in stretchable organic transistors because the state-of-the-art device performance is mostly hindered by channel resistance, advances in high mobility organic semiconductors will make contact resistance increasingly crucial in determining device performance, rendering gold materials more favorable in stretchable organic electronics. [41][42][43][44][45][46] Nevertheless, gold nanomaterials based electrodes have hitherto yet been well developed for intrinsically stretchable transistors. 2D gold nanosheets have been assembled to stretchable electrodes for P3HT fiber based stretchable organic transistors with good mechanical and electrical performance. [47][48][49] However, 2D gold nanosheets, fabricated at relatively high temperature (95 °C), are rigid in nature and the fabrication process is incompatible to the patterning processes via conventional photo lithography, and hence may limit device density, mechanical robustness, and scalability. [15] 1D gold nanowires (AuNWs) have emerged as an excellent materials candidate for serving as electrodes in stretchable electronics because of their mechanical flexibility, ease of fabrication, and Advances in large-area organic electronics for sensor arrays and electronic skins demand highly stretchable, patternable, and conformal electrodes to minimize contact resistance when sensing devices are mechanically deformed. Gold is an excellent electrode material with work function matching well with p-type organic transistors. However, it is non-trivial to fabricate highly stretchable gold electrodes for stretchable organic electronics. Here, by combining the advantages of both top-down patterning and bottomup synthesis, a new materials platform of patterned vertically grown gold nanowires (AuNWs) for constructing intrinsically stretcha...

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mentioning

confidence: 99%

Patterning Vertically Grown Gold Nanowire Electrodes for Intrinsically Stretchable Organic Transistors

Zhu

Gong

Lin

et al. 2018

Adv Elect Materials

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“…Moreover, they can be readily scaled to large-area production with high throughput. These features enable low-cost, large-area, and flexible device applications, leading to new ways to develop organic electronics in areas such as light-emitting-diodes3, solar cells4, thin-film transistors (TFTs)156, logic circuits789, and sensors101112.…”

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Strain sensitivity and durability in p-type and n-type organic thin-film transistors with printed silver electrodes

Fukuda

Hikichi

Sekine

et al. 2013

Sci Rep

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Mechanical flexibility and compatibility of printing processes are key advantage that organic electronic devices have over conventional inorganic devices. However, one of the major remaining issues for organic devices is insufficient mechanical durability of printed electrodes. Here we have investigated the mechanical durability of both p-type and n-type organic thin-film transistors (TFTs) with ink-jet printed silver electrodes from silver nanoparticle inks. The modified silver nanoparticle inks enabled the strong adhesion to the underlying polymer layer, and the fabricated organic TFTs exhibited excellent reproducibility in the bending cycle tests. The strong channel length dependence on the strain sensitivity was observed in both p-type and n-type organic TFTs. The organic TFTs with a short-channel exhibited higher sensitivity to the bending strain. These results suggest that the flexible organic TFTs with printed silver electrodes have excellent mechanical durability and are useful for bending and strain sensors.

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“…Fabrication of well-ordered soft-matter-based micro and nano structures over large area has drawn great interests in recent years due to their increasing applicability in polymer electronics1, soft machines2, flash memory, chemical and biosensors345, particularly biological applications such as tissue-engineering6, surface modification78 and microfluidics9. Owing to the importance associated with the soft-matter-based micro and nano structures, numerous conventional experimental methods have been developed to date to fabricate the pattern of functional soft-matters, such as photolithography10, inkjet printing11, direct-laser writing12, dip-pen and polymer pen lithography131415.…”

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confidence: 99%

Fabrication of Ultrafine Soft-Matter Arrays by Selective Contact Thermochemical Reaction

Cai

Wang²,

Wang

et al. 2013

Sci Rep

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Patterning of functional soft matters at different length scales is important for diverse research fields including cell biology, tissue engineering and medicinal science and the development of optics and electronics. Here we have further improved a simple but very efficient method, selective contact thermochemical reaction (SCTR), for patterning soft matters over large area with a sub-100 nm resolution. By selecting contact between different precursors through a topographically patterned PDMS stamp and subsequently any heating way for thermalchemical reaction, thermal-related soft matters can be patterned to form controllable micro or nano structures, even three-dimensional structures. The fine tunability and controllability of as-prepared micro and nano structures demonstrate this versatile approach a far wide range of uses than the merely academic.

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Simple push coating of polymer thin-film transistors

Cited by 118 publications

References 28 publications

Patterning Vertically Grown Gold Nanowire Electrodes for Intrinsically Stretchable Organic Transistors

Patterning Vertically Grown Gold Nanowire Electrodes for Intrinsically Stretchable Organic Transistors

Strain sensitivity and durability in p-type and n-type organic thin-film transistors with printed silver electrodes

Fabrication of Ultrafine Soft-Matter Arrays by Selective Contact Thermochemical Reaction

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