Transistors: Biaxially Stretchable Fully Elastic Transistors Based on Rubbery Semiconductor Nanocomposites (Adv. Mater. Technol. 6/2018)

Kim, Hae‐Jin; Thukral, Anish; Sharma, Sahil; Yu, Cunjiang

doi:10.1002/admt.201870022

Cited by 10 publications

(21 citation statements)

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“…Although this blending technique to prepare rubbery semiconductors has been known, it has more recently invited attention due to the rising interest in stretchable electronics. Among many insulating elastomers, PDMS is one of the widely used materials to fabricate rubbery semiconductor composites through this blending approach . Song et al reported a blend containing prepared P3HT NWs (P3HT‐NWs) in PDMS for a stretchable semiconductor .…”

Section: Rubbery Semiconductorsmentioning

confidence: 99%

“…Similarly, Kim et al prepared P3HT nanofibrils (P3HT‐NFs) by heating (60 °C) and cooling (−20 °C) for self‐assembled, highly crystalline P3HT‐NFs to blend with PDMS for fully rubbery electronics and sensors (Figure b) . SEBS has also been recently used as an elastomer for stretchable electronics because of its superior mechanical softness, as demonstrated by Shin et al's use of P3HT and SEBS as a rubbery semiconductor composite (Figure c) . They used the blend after cooling (−15 °C) and warming (25 °C) before spin casting to form a high quality P3HT‐NF film.…”

Section: Rubbery Semiconductorsmentioning

confidence: 99%

“…Under an electric field across the ion gel, a thin electric double layer is formed at both interfaces (between the ion gel/semiconductor and the ion gel/gate electrode) which leads to a high capacitance at the interfaces . Based on those advantages, ion gel was widely used for not only rigid field effect transistors, but also various stretchable electronics …”

Section: Rubbery Dielectricsmentioning

confidence: 99%

“…Because structural engineering for stretchable electronics with intrinsically nonstretchable materials has limitations for integration, packaging, and manufacturing cost due to large space usage for interconnection, stretchable electronics based on all rubber‐like components are promising future alternatives. Therefore, many rubbery electronics have been developed including transistors, logic gates, optoelectronic devices, physical sensors, energy harvesting devices, and others …”

Section: Rubbery Electronicsmentioning

confidence: 99%

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Rubbery Electronics Fully Made of Stretchable Elastomeric Electronic Materials

2019

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processes, and device structures have been transforming traditional wafer electronics to be soft, stretchy, and reconfigurable. In particular, owing to their superior mechanical characteristics, i.e., soft, bendable, stretchable, and twistable, stretchable electronics hold promise in health monitors, [1] medical implants, [2][3][4][5][6][7][8][9][10] artificial skins, [5,6,[11][12][13][14][15] human-machine interfaces, [11,[16][17][18][19][20] wearable internet of things, [21][22][23][24] etc.As the core and fundamental building block of active electronics, transistors constructed from semiconductors, conductors, and dielectrics are key to enabling electrical functionalities such as switching and amplification. To make transistors stretchable, either the associated electronic materials need to be stretchable or special mechanical structures and layouts need to be included in the transistor design. There are many studies reporting stretchable conductors, as reviewed in the following, while many readily available dielectric materials are stretchy. These have significantly offered many possible options in the device design space. To date, the dominant semiconductors employed for stretchable electronics are either conventional or emerging semiconductors. However, these materials, either in the format of inorganics (such as Si, GaAs, oxides) or organics (such as poly(3-hexylthiophene-2,5-diyl) or P3HT, pentacene), are mechanically nonstretchable. [20,21] Existing strategies to make these nonstretchable semiconductors stretchable mainly involve creating special mechanical structures or architectures with these materials, such as out-of-plane wrinkles, [25,26] in-plane serpentines, [27,28] rigid islands with deformable interconnects, [29][30][31] and kirigami architectures, [32][33][34] to eliminate mechanical strain while they are stretched. However, these approaches require sophisticated structural designs, complicated manufacturing processes, or consume a large area due to stretchable interconnection, all of which pose substantial challenges in high-density integration, packaging, associated high cost, and mass production.Constructing devices all from intrinsically stretchable elastomeric electronic materials offers another interesting yet promising route toward stretchable transistors and electronics. These types of electronics, namely rubbery electronics, neatly avoid the aforementioned challenges since they do not require structural engineering for device fabrication and the manufacturing processes can be adopted into conventional fabrication processes. [29,35] In addition, rubbery electronics offer better cost Stretchable electronics outperform existing rigid and bulky electronics and benefit a wide range of species, including humans, machines, and robots, whose activities are associated with large mechanical deformation and strain. Due to the nonstretchable nature of most electronic materials, in particular semiconductors, stretchable electronics are mostly realized through the strategies of architectural engine...

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Section: Rubbery Semiconductorsmentioning

confidence: 99%

Section: Rubbery Semiconductorsmentioning

confidence: 99%

Section: Rubbery Dielectricsmentioning

confidence: 99%

Section: Rubbery Electronicsmentioning

confidence: 99%

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Rubbery Electronics Fully Made of Stretchable Elastomeric Electronic Materials

2019

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“…Thin, soft skin‐integrated electronics have attracted great attentions due to their advantages such as flexible, lightweight, and mechanical compatible with human body, thus offer unique capabilities in detecting vital information and continuous monitoring human health . Recent advances in materials development, electronics miniaturization, mechanics optimization, and system‐level integration build up the foundations for flexible and stretchable electronics which are able to be integrated together with skin. Considering power supply for this new kind of soft electronics, conversion of mechanical energy from human body activities and motions to electricity is a considerable route .…”

Section: Introductionmentioning

confidence: 99%

Skin‐Integrated Graphene‐Embedded Lead Zirconate Titanate Rubber for Energy Harvesting and Mechanical Sensing

Liu

Zhao

Wang

et al. 2019

Adv Materials Technologies

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Thin, soft, skin‐like electronics capable of transforming body mechanical motions to electrical signals have broad potential applications in biosensing and energy harvesting. Forming piezoelectric materials into flexible and stretchable formats and integrating with soft substrate would be a considerable strategy for this aspect. Here, a skin‐integrated rubbery electronic device that associates with a simple low‐cost fabrication method for a ternary piezoelectric rubber composite of graphene, lead zirconate tinanate (PZT), and polydimethylsiloxane (PDMS) is introduced. Comparing to the binary composite that blend with PZT and PDMS, the graphene‐embedded ternary composite exhibits a significant enhancement of self‐powered behavior, with a maximum power density of 972.43 µW cm−3 under human walking. Combined experimental and theoretical studies of the graphene‐embedded PZT rubber allow the skin‐integrated electronic device to exhibit excellent mechanical tolerance to bending, stretching, and twisting for thousands of cycles. Customized device geometries guided by optimized mechanical design enable a more comprehensive integration of the rubbery electronics with the human body. For instance, annulus‐shape devices can perfectly mount on the joints and ensure great power output and stability under continuous and large deformations. This work demonstrates the potential of large‐area, skin‐integrated, self‐powered electronics for energy harvesting as well as human health related mechanical sensing.

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Tacky Elastomers to Enable Tear‐Resistant and Autonomous Self‐Healing Semiconductor Composites

Song

Cheng

Galuska

et al. 2020

Adv Funct Materials

123

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Mechanical failure of π-conjugated polymer thin films is unavoidable under cyclic loading conditions, due to intrinsic defects and poor resistance to crack propagation. Here, the first tear-resistant and roomtemperature self-healable semiconducting composites is presented, consisting of conjugated polymers and butyl rubber elastomers. This new composite displays both record-low elastic modulus (< 1 MPa) and ultra-high deformability with fracture strain above 800%. More importantly, failure behavior is not sensitive to precut notches under deformation. Autonomous self-healing at room temperature, both mechanical and electronic, is demonstrated through physical contact of two separate films. The composite film also shows device stability in the ambient environment over five months due to muchimproved barrier property to both oxygen and water. Butyl rubber is broadly applicable to various Ptype and N-type semiconducting polymers for fabricating self-healable electronics to provide new resilient electronics that mimic the tear resistance and healable property of human skin.

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Transistors: Biaxially Stretchable Fully Elastic Transistors Based on Rubbery Semiconductor Nanocomposites (Adv. Mater. Technol. 6/2018)

Cited by 10 publications

References 0 publications

Rubbery Electronics Fully Made of Stretchable Elastomeric Electronic Materials

Rubbery Electronics Fully Made of Stretchable Elastomeric Electronic Materials

Skin‐Integrated Graphene‐Embedded Lead Zirconate Titanate Rubber for Energy Harvesting and Mechanical Sensing

Tacky Elastomers to Enable Tear‐Resistant and Autonomous Self‐Healing Semiconductor Composites

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