N‐Type Self‐Assembled Monolayer Field‐Effect Transistors and Complementary Inverters

Ringk, Andreas; Li, X Xiaoran; Gholamrezaie, Fatemeh; Smits, Ecp Edsger; Neuhold, Alfred; Moser, A.; Marel, C. van der; Gelinck, Gerwin; Resel, Roland; Leeuw, DM Dago de; Strohriegl, Peter

doi:10.1002/adfm.201202888

Cited by 61 publications

(57 citation statements)

References 30 publications

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“…1(a)] are not suitable for directly relating the drain current from experiment to theoretical values. The real devices are restricted to operating at relatively short channel lengths (3 μm) and are therefore limited by contact resistance [32][33][34], which limits the drain current dramatically. A comparison requires experimental access to drain currents of devices of a SAM system that is less limited in channel length and/or allows the fabrication of long channel devices with a four-point-probe setup (e.g., such as that used in Ref.…”

Section: Discussionmentioning

confidence: 99%

Simulation of charge transport in organic semiconductors: A time-dependent multiscale method based on nonequilibrium Green's functions

Leitherer¹,

Jäger

Krause

et al. 2017

Phys. Rev. Materials

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In weakly interacting organic semiconductors, static disorder and dynamic disorder often have an important impact on transport properties. Describing charge transport in these systems requires an approach that correctly takes structural and electronic fluctuations into account. Here, we present a multiscale method based on a combination of molecular-dynamics simulations, electronic-structure calculations, and a transport theory that uses time-dependent nonequilibrium Green's functions. We apply the methodology to investigate charge transport in C 60 -containing self-assembled monolayers, which are used in organic field-effect transistors.

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Section: Discussionmentioning

confidence: 99%

Simulation of charge transport in organic semiconductors: A time-dependent multiscale method based on nonequilibrium Green's functions

Leitherer¹,

Jäger

Krause

et al. 2017

Phys. Rev. Materials

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“…These films can be incorporated as active layers in thin film transistors, so called self-assembled monolayer field-effect transistors (SAMFETs). [15][16][17][18][19][20] In these devices with real 2D-confined channels, the morphology is of particular interest, as small perturbations in the packing of the molecules, immediately strongly influence the transport properties in the transistor. This, on the other hand means that SAMFETs are an ideal tool to investigate thin film morphologies on the sub-nanometre scale in functionalized self-assembled monolayers.…”

Section: Introductionmentioning

confidence: 99%

Tuning the molecular order of C₆₀-based self-assembled monolayers in field-effect transistors

Schmaltz¹,

Khassanov²,

Steinrück

et al. 2014

Nanoscale

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The control of order in organic semiconductor systems is crucial to achieve desired properties in electronic devices. We have studied the order in fullerene functionalized self-assembled monolayers by mixing the active molecules with supporting alkyl phosphonic acids of different chain length. By adjusting the length of the molecules, structural modifications of the alignment of the C 60 head groups within the SAM can be tuned in a controlled way. These changes on the sub-nanometre scale were analysed by grazing incidence X-ray diffraction and X-ray reflectivity. To study the electron transport properties across these layers, self-assembled monolayer field-effect transistors (SAMFETs) were fabricated containing only the single fullerene monolayer as semiconductor. Electrical measurements revealed that a high 2D crystalline order is not the only important aspect. If the fullerene head groups are too confined by the supporting alkyl phosphonic acid molecules, defects in the crystalline C 60 film, such as grain boundaries, start to strongly limit the charge transport properties. By close interpretation of the results of structural investigations and correlating them to the results of electrical characterization, an optimum chain length of the supporting alkyl phosphonic acids in the range of C 10 was determined. With this study we show that minor changes in the order on the sub-nanometre scale, can strongly influence electronic properties of functional self-assembled monolayers.

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“…In principle two synthetic strategies are known 16 to synthesize heterosubstituted PBIs. One of these routes was used for our synthesis and will be described in detail in the following chapter 17 .…”

Section: Synthesismentioning

confidence: 99%

N-type self-assembled monolayer field-effect transistors

Ringk¹,

Li²,

Gholamrezaie³

et al. 2012

SPIE Proceedings

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Within this work we present the synthesis and applications of a novel material designed for n-type self-assembled monolayer field-effect transistors (SAMFETs). Our novel perylene bisimide based molecule was obtained in six steps and is functionalized with a phosphonic acid linker which enables a covalent fixation on aluminum oxide dielectrics. The organic field-effect transistors (OFETs) were fabricated by submerging predefined transistor substrates in a dilute solution of the molecule under ambient conditions. Investigations showed a thickness of about 3 nm for the organic layer which is coincides to the molecular length. The transistors showed bulk-like electron mobilities up to 10 -3 cm 2 /Vs. Due to the absence of bulk current high on/off-ratios were achieved. An increase of the electron mobility with the channel length and XPS investigations point to a complete coverage of the dielectric with a dense monolayer. In addition, a p-type SAMFET based on a thiophene derivative and our new n-type SAMFET were combined to the first CMOS bias inverter based solely on SAMFETs.

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N‐Type Self‐Assembled Monolayer Field‐Effect Transistors and Complementary Inverters

Cited by 61 publications

References 30 publications

Simulation of charge transport in organic semiconductors: A time-dependent multiscale method based on nonequilibrium Green's functions

Simulation of charge transport in organic semiconductors: A time-dependent multiscale method based on nonequilibrium Green's functions

Tuning the molecular order of C₆₀-based self-assembled monolayers in field-effect transistors

N-type self-assembled monolayer field-effect transistors

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N‐Type Self‐Assembled Monolayer Field‐Effect Transistors and Complementary Inverters

Cited by 61 publications

References 30 publications

Simulation of charge transport in organic semiconductors: A time-dependent multiscale method based on nonequilibrium Green's functions

Simulation of charge transport in organic semiconductors: A time-dependent multiscale method based on nonequilibrium Green's functions

Tuning the molecular order of C60-based self-assembled monolayers in field-effect transistors

N-type self-assembled monolayer field-effect transistors

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Product

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Tuning the molecular order of C₆₀-based self-assembled monolayers in field-effect transistors