Uniform, high performance, solution processed organic thin-film transistors integrated in 1 MHz frequency ring oscillators

Ogier, Simon; Matsui, Hiroyuki; Feng, Linrun; Simms, Michael J.; Mashayekhi, Mohammad; Carrabina, Jordi; Terés, Lluís; Tokito, Shizuo

doi:10.1016/j.orgel.2017.12.005

Cited by 31 publications

(17 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is the smallest signal delay reported to date for an organic TFT–based ring oscillator at a supply voltage of less than 50 V (see Fig. 1E ) ( 27 ). From the signal-propagation delay, an equivalent frequency ( f eq = 1/2τ) can be calculated that provides an estimate of the average frequency at which the TFTs are switching in the ring oscillator and which can be used to approximate the TFTs’ transit frequency ( f T ) to within a factor of about 2 ( 7 ).…”

Section: Resultsmentioning

confidence: 80%

Flexible low-voltage high-frequency organic thin-film transistors

et al. 2020

View full text Add to dashboard Cite

The primary driver for the development of organic thin-film transistors (TFTs) over the past few decades has been the prospect of electronics applications on unconventional substrates requiring low-temperature processing. A key requirement for many such applications is high-frequency switching or amplification at the low operating voltages provided by lithium-ion batteries (~3 V). To date, however, most organic-TFT technologies show limited dynamic performance unless high operating voltages are applied to mitigate high contact resistances and large parasitic capacitances. Here, we present flexible low-voltage organic TFTs with record static and dynamic performance, including contact resistance as small as 10 Ω·cm, on/off current ratios as large as 1010, subthreshold swing as small as 59 mV/decade, signal delays below 80 ns in inverters and ring oscillators, and transit frequencies as high as 21 MHz, all while using an inverted coplanar TFT structure that can be readily adapted to industry-standard lithographic techniques.

show abstract

Section: Resultsmentioning

confidence: 80%

Flexible low-voltage high-frequency organic thin-film transistors

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Another approach to control V T through the geometry is by means of the Corbino OTFT structure. Very few works have previously reported inorganic Corbino TFTs [30][31][32][33]. As OTFT based on small molecule OSC can present large diversity of crystal orientation and grain boundaries [34,35] and thus high V T variability, Corbino OTFTs were developed to overcome this by having a circular channel making them more robust.…”

Section: Introductionmentioning

confidence: 99%

Monotype Organic Dual Threshold Voltage Using Different OTFT Geometries

Arnal

Martínez‐Domingo

Ogier³

et al. 2019

Crystals

Self Cite

View full text Add to dashboard Cite

It is well known that organic thin film transistor (OTFT) parameters can be shifted depending on the geometry of the device. In this work, we present two different transistor geometries, interdigitated and Corbino, which provide differences in the key parameters of devices such as threshold voltage (VT), although they share the same materials and fabrication procedure. Furthermore, it is proven that Corbino geometries are good candidates for saturation-mode current driven devices, as they provide higher ION/IOFF ratios. By taking advantage of these differences, circuit design can be improved and the proposed geometries are, therefore, particularly suited for the implementation of logic gates. The results demonstrate a high gain and low hysteresis organic monotype inverter circuit with full swing voltage at the output.

show abstract

“…Compilation of a) transition frequency values and b) transition frequencies normalized by driving voltage V DS versus time in organic transistors, using various technologies …”

Section: Introduction: Vertical Versus Lateral Organic Transistorsmentioning

confidence: 99%

A Review of Vertical Organic Transistors

Kleemann

Krechan

Fischer

et al. 2020

Adv Funct Materials

127

110

View full text Add to dashboard Cite

Powerful electronic devices require performant short‐channel transistors. For organic electronics, though, promising low‐cost and flexible electronic circuits, high processing costs for short channel devices are not acceptable. In this regard, vertical organic transistors (VOTs) are an attractive alternative, and in fact, today they reach the highest transition frequency (40 MHz) and the highest footprint current density (>1 MA cm−2) among all organic transistors. Here, all VOT concepts are reviewed, while discussing device physics, integration approaches, and highlighting the recent developments. The upcoming challenges for the VOT technology are also presented with a guideline for further developments.

show abstract

Uniform, high performance, solution processed organic thin-film transistors integrated in 1 MHz frequency ring oscillators

Cited by 31 publications

References 27 publications

Flexible low-voltage high-frequency organic thin-film transistors

Flexible low-voltage high-frequency organic thin-film transistors

Monotype Organic Dual Threshold Voltage Using Different OTFT Geometries

A Review of Vertical Organic Transistors

Contact Info

Product

Resources

About