R2R gravure and inkjet printed RF resonant tag

Allen, Mark; Lee, Chang-Woo; Ahn, Byung-Joon; Kololuoma, Terho; Shin, Kee‐Hyun; Ko, Sung-Lim

doi:10.1016/j.mee.2011.08.010

Cited by 65 publications

(27 citation statements)

References 16 publications

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“…Inkjet printing (59)(60)(61)(62)(63) and roll-to-roll printing (27,(64)(65)(66) are the two most commonly used methods to fabricate organic circuits and have the greatest potential for enabling large-area, low-cost organic electronics. These techniques, however, suffer from registration inaccuracies requiring large features and specially designed layouts and processes (27,64,66). The minimum feature sizes also vary widely, typically in the tens of micrometers range or higher (27,67).…”

Section: Discussionmentioning

confidence: 99%

Large-area formation of self-aligned crystalline domains of organic semiconductors on transistor channels using CONNECT

Park

Giri

Shaw

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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The electronic properties of solution-processable small-molecule organic semiconductors (OSCs) have rapidly improved in recent years, rendering them highly promising for various low-cost largearea electronic applications. However, practical applications of organic electronics require patterned and precisely registered OSC films within the transistor channel region with uniform electrical properties over a large area, a task that remains a significant challenge. Here, we present a technique termed "controlled OSC nucleation and extension for circuits" (CONNECT), which uses differential surface energy and solution shearing to simultaneously generate patterned and precisely registered OSC thin films within the channel region and with aligned crystalline domains, resulting in low device-to-device variability. We have fabricated transistor density as high as 840 dpi, with a yield of 99%. We have successfully built various logic gates and a 2-bit halfadder circuit, demonstrating the practical applicability of our technique for large-scale circuit fabrication.organic semiconductors | patterning | small molecules | transistors | circuits

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Section: Discussionmentioning

confidence: 99%

Large-area formation of self-aligned crystalline domains of organic semiconductors on transistor channels using CONNECT

Park

Giri

Shaw

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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“…[ 141 ] Antennas are typically designed to operate at one or more frequencies within the industrial, scientifi c, and medical (ISM) bands; to convert to DC from these frequencies, the antenna is integrated with a rectifi er to form a "rectenna." Several fl exible rectennas have been developed [166][167][168][169] and used to power temperature, humidity, oxygen concentration, and chemical sensors. [170][171][172] To improve power density, rectennas have been integrated with other energy harvesting devices, including photovoltaics [ 142,173,174 ] and piezoelectrics, [ 175 ] and there is also the potential to transmit additional power to the antennas beyond what is available in the environment, for example using transmitters developed for RFID.…”

Section: Power Sourcesmentioning

confidence: 99%

Monitoring of Vital Signs with Flexible and Wearable Medical Devices

et al. 2016

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Advances in wireless technologies, low-power electronics, the internet of things, and in the domain of connected health are driving innovations in wearable medical devices at a tremendous pace. Wearable sensor systems composed of flexible and stretchable materials have the potential to better interface to the human skin, whereas silicon-based electronics are extremely efficient in sensor data processing and transmission. Therefore, flexible and stretchable sensors combined with low-power silicon-based electronics are a viable and efficient approach for medical monitoring. Flexible medical devices designed for monitoring human vital signs, such as body temperature, heart rate, respiration rate, blood pressure, pulse oxygenation, and blood glucose have applications in both fitness monitoring and medical diagnostics. As a review of the latest development in flexible and wearable human vitals sensors, the essential components required for vitals sensors are outlined and discussed here, including the reported sensor systems, sensing mechanisms, sensor fabrication, power, and data processing requirements.

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“…In recent years, printing technology has attracted considerable attention in research and development because it can be used to fabricate low-cost and large-area electronic devices, using printing technology, which expected to be used in the manufacturing process for flexible displays devices [1][2][3], printed sensors [4][5][6], memory devices [7] and radio frequency identification (RFID) tags [8,9]. Although the development of semiconductor inks is very important to realize a high performance circuit, the conductive inks are also the key material for fabricating fully printed thin-film transistor (TFT).…”

Section: Introductionmentioning

confidence: 99%

Inkjet-printed copper electrodes using photonic sintering and their application to organic thin-film transistors

Norita

Kumaki

Kobayashi

et al. 2015

Organic Electronics

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a b s t r a c tWe report on copper (Cu) electrodes fabricated with inkjet-printed nanoparticle inks that are photonic sintered on a polymer dielectric layer and their application to source and drain electrodes in organic thin-film transistor (TFT). By using photonic sintering with a radiant energy density of 9 J/cm 2 , printed Cu nanoparticle layers on a glass substrate showed very low electrical resistivity levels of 7 lX cm. By optimizing the sintering conditions on polymer dielectric, the pentacene-based TFT using these printed Cu electrodes showed good mobility levels of 0.13 cm 2 /Vs and high on/off current ratios of about 10 6 . In addition, we revealed that the crystal grain growth of pentacene near the printed Cu electrodes was inhibited by the thermal damage of polymer underlayer due to the high radiant energy density of the intense light.

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R2R gravure and inkjet printed RF resonant tag

Cited by 65 publications

References 16 publications

Large-area formation of self-aligned crystalline domains of organic semiconductors on transistor channels using CONNECT

Large-area formation of self-aligned crystalline domains of organic semiconductors on transistor channels using CONNECT

Monitoring of Vital Signs with Flexible and Wearable Medical Devices

Inkjet-printed copper electrodes using photonic sintering and their application to organic thin-film transistors

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