Organic Field-effect Transistor Based on Biphenyl Substituted TTF

Noda, Bunpei; Katsuhara, Mao; Aoyagi, Isao; Mori, Takehiko; Taguchi, Tomohiro; Kambayashi, Takuya; Ishikawa, Ken; Takezoe, Hideo

doi:10.1246/cl.2005.392

Cited by 36 publications

(26 citation statements)

References 24 publications

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“…It is expected that their ability to afford a vast variety of molecular conductors and superconductors permits their use in high-performance single-component channel materials of OFETs. To date, organic thin-film transistors with a mobility of about 0.1-1.4 cm 2 Vs −1 have been reported for some TTF analogues [57][58][59][60][61][62][63]. Figure 13(a) shows the molecular structures of some TTF analogues studied for OFETs: dithiophene-tetrathiafulvalene (DTTTF), hexamethylenetetrathiafulvalene (HMTTF), dibenzo-tetrathiafulvalene (DBTTF) and dinaphtho-tetrathiafulvalene (DNTTF).…”

Section: Sc-ofets Of Ttf Analoguesmentioning

confidence: 99%

Organic field-effect transistors using single crystals

Hasegawa

Takeya

2009

Science and Technology of Advanced Materials

351

215

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Organic field-effect transistors using small-molecule organic single crystals are developed to investigate fundamental aspects of organic thin-film transistors that have been widely studied for possible future markets for 'plastic electronics'. In reviewing the physics and chemistry of single-crystal organic field-effect transistors (SC-OFETs), the nature of intrinsic charge dynamics is elucidated for the carriers induced at the single crystal surfaces of molecular semiconductors. Materials for SC-OFETs are first reviewed with descriptions of the fabrication methods and the field-effect characteristics. In particular, a benchmark carrier mobility of 20-40 cm 2 Vs −1 , achieved with thin platelets of rubrene single crystals, demonstrates the significance of the SC-OFETs and clarifies material limitations for organic devices. In the latter part of this review, we discuss the physics of microscopic charge transport by using SC-OFETs at metal/semiconductor contacts and along semiconductor/insulator interfaces. Most importantly, Hall effect and electron spin resonance (ESR) measurements reveal that interface charge transport in molecular semiconductors is properly described in terms of band transport and localization by charge traps.

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Section: Sc-ofets Of Ttf Analoguesmentioning

confidence: 99%

Organic field-effect transistors using single crystals

Hasegawa

Takeya

2009

Science and Technology of Advanced Materials

351

215

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“…The reason might be attributed to the different measurement conditions. The poor FET performance was also found in the thin-film devices based on compounds 11-16 [29][30][31]. Similar to 4, these compounds have high HOMO levels, their thin films are labile to oxygen, and the resulting dopants increase the conductivity of the film in the off-or ungated-state and lead to aforementioned poor FET performance.…”

confidence: 93%

“…The planar π-expanded molecular structure, easily chemical modification, high thermal-and air-stability, and excellent chargetransport property make DB-TTF bisimides promising organic electronic materials. As shown in Scheme 5, some bis(1,3-dithiol-2-ylidene) compounds (26)(27)(28)(29)(30)(31)(32)(33)(34)(35) that are π-expanded TTF analogs, like bis[1,2,5]thiadiazolo-p-quinobis(1,3-dithiole) (BTQBT), were studied for thin-film OFETs by Forrest and by Yamashita [32][33][34]. The FET measurements were carried out in vacuum or using another organic layer to isolate semiconductor layer from air.…”

confidence: 99%

Organic field-effect transistors based on tetrathiafulvalene derivatives

Gao

Qiu

Liu

et al. 2008

Pure and Applied Chemistry

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In recent years, tetrathiafulvalene (TTF) and its derivatives have been used as semiconducting materials for organic field-effect transistors (OFETs). In this review, we summarize the recent progress in the field of TTF-based OFETs. We introduce the structure and operation of OFETs, and focus on TTF derivatives used in OFETs. TTF derivatives used in OFETs can be divided into three parts by the semiconductor's morphology and the device fabrication technique: (1) TTF derivatives used for single-crystal OFETs, (2) TTF derivatives used for vacuum-deposited thin-film OFETs, and (3) TTF derivatives used for solutionprocessed thin-film OFETs. The single-crystal OFETs based on TTF derivatives were fabricated by drop-casting method and showed high performance, with the mobility up to 1.4 cm 2 /Vs. The vacuum-deposited thin-film OFETs based on TTF derivatives were well developed, some of which have shown high performance comparable to that of amorphous silicon, with good air-stability. Although the mobilities of most solution-processed OFETs based on TTF derivatives are limited at 10 -2 cm 2 /Vs, the study on solution-processable TTF derivatives and their devices are promising, because of their low-cost, large-area-coverage virtues. The use of organic charge-transfer (OCT) compounds containing TTF or its derivatives in OFETs is also included in this review.

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“…36 Biphenyl-TTF (14) exhibits relatively good transistor properties. 37 Among the tetrathiapentalene (TTP) derivatives 15 with different terminal rings, the cyclopentane compound (n = 2) shows the best transistor properties. 38 The crystal structure sensitively changes depending on the terminal cycloalkane groups; the cyclopentane compound (n = 2) has a herringbone structure with a large dihedral angle (128°) similarly to DB-TTF, the cyclobutane compound (n = 1) has simple uniform stacks, and the cyclohexane compound (n = 3) shows uniform stacking structure of bent molecules.…”

Section: ¹1mentioning

confidence: 99%

Organic Charge-transfer Salts and the Component Molecules in Organic Transistors

Mori

2011

Chemistry Letters

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Electron donors and acceptors such as tetrathiafulvalene (TTF) and tetracyanoquinodimethane (TCNQ), which have been long known as components of organic metals, act as p-and n-channel organic semiconductors in organic field-effect transistors. High performance, good thin-film properties, and long-term stability have been achieved on the basis of appropriate molecular design. In addition, their charge-transfer complexes work as the active layers as well as conducting electrode materials showing low contact resistance.

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Organic Field-effect Transistor Based on Biphenyl Substituted TTF

Cited by 36 publications

References 24 publications

Organic field-effect transistors using single crystals

Organic field-effect transistors using single crystals

Organic field-effect transistors based on tetrathiafulvalene derivatives

Organic Charge-transfer Salts and the Component Molecules in Organic Transistors

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