Electrical Properties of Hybrid Nanomembrane/Nanoparticle Heterojunctions: The Role of Inhomogeneous Arrays

Bendová, Mária; Bufon, Carlos César Bof; Fomin, V. M.; Gorantla, Sandeep; Rümmeli, Mark H.; Schmidt, Oliver G.

doi:10.1021/acs.jpcc.6b01036

Cited by 9 publications

(28 citation statements)

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“…This issue has long plagued the molecular electronics field, hampering the development of novel devices in this research area. A Swiss‐roll architecture consisting of metallic nanomembranes possesses a smooth and robust surface plane, which can be used to gently contact molecules and nanostructures . These soft contacts are formed by rolling up strained metallic layers into tubular structures which then touch the top of the active material area ( Figure ).…”

Section: State‐of‐the‐art Self‐assembled Microelectronic Devicesmentioning

confidence: 99%

“…This concept has also been applied to contact molecular nanostructures in order to create gas sensors, in which the organic channels are able to sense the analyte by measuring electrical transport through the nanomembrane electrodes (Figure c) . The soft‐contact method has also been used to investigate charge transport across colloidal Au nanoparticle (Figure d) heterojunctions in an out‐of‐plane direction, which is difficult to realize using conventional methods . The procedure of fabricating the heterojunctions as well as the theoretical approach employed to study the charge transport mechanisms across the nanoparticle layers provide a universal platform for investigating the electronic properties of different types of nanoparticles and inhomogeneous layers.…”

Section: State‐of‐the‐art Self‐assembled Microelectronic Devicesmentioning

confidence: 99%

“…A Swiss-roll architecture consisting of metallic nanomembranes possesses a smooth and robust surface plane, which can be used to gently contact molecules and nanostructures. [176,187,[192][193][194][195] These soft contacts are formed by rolling up strained metallic layers into tubular structures which then touch the top of the active material area (Figure 11). In this way short cuts through pinholes are avoided and the intrinsic transport properties of organic molecular layers can be thoroughly studied (Figure 11a,b).…”

Section: Soft Contact Molecular Devicesmentioning

confidence: 99%

“…[192] The soft-contact method has also been used to investigate charge transport across colloidal Au nanoparticle (Figure 11d) heterojunctions in an out-of-plane direction, which is difficult to realize using conventional methods. [193] The procedure of fabricating the heterojunctions as well as the theoretical approach employed to study the charge transport mechanisms across the nanoparticle layers provide a universal platform for investigating the electronic properties of different types of nanoparticles and inhomogeneous layers. Petrini et al developed a reliable method of measuring the dielectric properties of organic materials by measuring the capacitance of rolled-up capacitors consisting of metallic electrodes and softly contacted organic layers (Figure 11e,f).…”

Section: Soft Contact Molecular Devicesmentioning

confidence: 99%

“…Adapted with permission. [193] Copyright 2016, American Chemical Society. e) Sketch of capacitive devices with respective layer structure and electrical circuit in planar and rolled-up configuration.…”

Section: Actuatorsmentioning

confidence: 99%

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3D Self‐Assembled Microelectronic Devices: Concepts, Materials, Applications

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www.advmat.de www.advancedsciencenews.com photolithography techniques. New amorphous semiconducting materials are involved in the development of flexible electronics based on high-performance compounds that include organic [82] and inorganic (e.g., copper oxide [83] or indium-gallium-zinc oxide (IGZO) [84] ) semiconductor possessing, for instance, the transparency [85] required in optoelectronic applications. Once fabricated on polymeric ultrathin substrates, these devices offer the flexibility, stretchability, and imperceptibility [85][86][87] for onskin (Figure 3 a,b,d) biomedical applications, such as biosensors capable of conformally wrapping a soft or irregularly shaped 3D biological sample such as a cancer cell or a pollen grain. [88] Demonstrating outstanding mechanical stability, thin-film materials, in particular semiconductors, are superior candidates for 3D applications compared to monocrystalline semiconductors. [87,89,90] Good examples are amorphous oxides and some organic molecular semiconductors [82] (Figure 3b-d) which are particularly attractive for 3D self-assembled microelectronics. By employing substrates with a thickness in the micro-and submicrometer range (Figure 3) many issues associated with mechanical stress on the surface could be mitigated, demonstrating the increased robustness and reliability of thinfilm electronics. [87,89] Electronic skin (e-skin) (Figure 3a,b,d), for Adv. Mater. 2020, 32, 1902994 Adv. Mater. 2020, 32, 1902994 Figure 3. Thin-film flexible electronic devices and applications. a) Mechanical prosthesis with stretchable electronic skin. Adapted with permission. [97] Copyright 2014, Springer Nature. b) Schematics and photograph of imperceptible organic electronics equipped with tactile active sensor matrix. Adapted with permission. [87] Copyright 2013, Springer Nature. c) Complex circuits with 8-bit microprocessors made of 3381 organic thin-film transistors. Adapted with permission. [98] Copyright 2012, IEEE. d) Ultrathin substrate combined with high-performance indium-gallium-zinc oxide (IGZO) circuitry paving the way for active medical devices on contact lenses. [85] Adapted with permission. [85] Copyright 2014, Springer Nature.

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Section: State‐of‐the‐art Self‐assembled Microelectronic Devicesmentioning

confidence: 99%

Section: State‐of‐the‐art Self‐assembled Microelectronic Devicesmentioning

confidence: 99%