Progress in organic integrated circuit manufacture

Taylor, D.M.

doi:10.7567/jjap.55.02ba01

Cited by 10 publications

(9 citation statements)

References 77 publications

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“…Organic electronic devices such as organic thin-film transistors (TFTs) [1][2][3][4] and light-emitting diodes [5][6][7] have attracted attention because of their application in large area, flexible, lightweight and cost effective devises. In addition, organic TFTs exhibit high field-effect mobilities close to those of oxide TFTs.…”

Section: Introductionmentioning

confidence: 99%

Wide-range work function tuning in gold surfaces modified with fluorobenzenethiols toward application to organic thin-film transistors

Yoshioka¹,

Fujita²,

Kimura³

et al. 2020

Flex. Print. Electron.

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Surface properties of Au electrodes modified by benzenethiol derivatives with a fluorine atom(s) have been methodically researched based on measurements of the work function and the contact angles. Benzenethiol derivatives with a fluorine atom(s) at ortho, meta, and/or para position were used for modification in this work. The measured work function was in a relatively wide range between 4.24-6.02 eV. The work function change from a bare Au surface was explained on the principle of dipole moments obtained by quantum chemical calculation. The water contact angle was found to vary between 64.8°and 97.7°. Furthermore, the surface tension was calculated from the measured contact angles of water and ethylene glycol. The calculated surface tension was reviewed from the perspective of the position of the substitute in the benzenethiol derivative. In addition, organic thinfilm transistors (TFTs) with drain and source electrodes modified with 2-fluorobenzenethiol (2-FBT), 3-fluorobenzenethiol (3-FBT) or pentafluorobenzenethiol (PFBT) were characterized as other evaluations of the modified Au surface. The contact resistance in the TFT increased in the order of PFBT, 3-FBT and 2-FBT. The increase of the contact resistance was consistent with the decrease in the work function.

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Section: Introductionmentioning

confidence: 99%

Wide-range work function tuning in gold surfaces modified with fluorobenzenethiols toward application to organic thin-film transistors

Yoshioka¹,

Fujita²,

Kimura³

et al. 2020

Flex. Print. Electron.

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“…The delay time ( t ) can be given by 1/2 Nf , where N and f are the number of stages and the switching frequency, respectively 64 . The value of t = 11.6 μs is among the lowest reported for ring oscillators based on conjugated polymers and even better than that of carbon nanotube oscillators 64 – 66 . Real logic functionality is realized by 15-bit code generators.…”

Section: Resultsmentioning

confidence: 71%

Integrated circuits based on conjugated polymer monolayer

Mangalore

Zhao

et al. 2018

Nat Commun

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It is still a great challenge to fabricate conjugated polymer monolayer field-effect transistors (PoM-FETs) due to intricate crystallization and film formation of conjugated polymers. Here we demonstrate PoM-FETs based on a single monolayer of a conjugated polymer. The resulting PoM-FETs are highly reproducible and exhibit charge carrier mobilities reaching 3 cm2 V−1 s−1. The high performance is attributed to the strong interactions of the polymer chains present already in solution leading to pronounced edge-on packing and well-defined microstructure in the monolayer. The high reproducibility enables the integration of discrete unipolar PoM-FETs into inverters and ring oscillators. Real logic functionality has been demonstrated by constructing a 15-bit code generator in which hundreds of self-assembled PoM-FETs are addressed simultaneously. Our results provide the state-of-the-art example of integrated circuits based on a conjugated polymer monolayer, opening prospective pathways for bottom-up organic electronics.

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“…( 7) is a non-linear model. The MD register model is linearized using the perturbation method 15) to compute the frequency response of the MD register. To linearize Eq.…”

Section: Mathematical Modelingmentioning

confidence: 99%

“…High-precision registration, i.e., the alignment between superimposed printed patterns that are printed by different printing cylinders, is a critical issue in R2R printing, and it should be precisely controlled to fabricate reliable electric micro-circuits. [11][12][13][14][15] Figure 1 shows the registration of a printed pattern in a two-layer R2R gravure printing system. In this R2R configuration, the register error is defined as the relative distance between the reference position and the printed position of the current printing pattern.…”

Section: Introductionmentioning

confidence: 99%

High-precision register error control using active-motion-based roller in roll-to-roll gravure printing

Jung

Nguyen²,

Choi³

et al. 2018

Jpn. J. Appl. Phys.

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The roll-to-roll (R2R) gravure printing method is increasingly being utilized to fabricate electronic devices such as organic thin-film transistor (OTFT), radio-frequency identification (RFID) tags, and flexible PCB owing to its characteristics of high throughput and large area. High precision registration is crucial to satisfy the demand for device miniaturization, the improvement of resolution and accuracy. This paper presents a novel register control method that uses an active motion-based roller (AMBR) to reduce register error in R2R gravure printing. Instead of shifting the phase of the downstream printing roller, which leads to undesired tension disturbance, the 1 degree-of-freedom (1-DOF) mechanical device AMBR is used to compensate for web elongation by controlling its motion according to the register error. The performance of the proposed control method is verified through simulations and experiments, and the results show that the proposed register control method using the AMBR could maintain a register error under +15 µm.

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Progress in organic integrated circuit manufacture

Cited by 10 publications

References 77 publications

Wide-range work function tuning in gold surfaces modified with fluorobenzenethiols toward application to organic thin-film transistors

Wide-range work function tuning in gold surfaces modified with fluorobenzenethiols toward application to organic thin-film transistors

Integrated circuits based on conjugated polymer monolayer

High-precision register error control using active-motion-based roller in roll-to-roll gravure printing

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