Abstract
Printing electronic components on plastic foils with functional liquid inks is an attractive approach for achieving flexible and low-cost circuitry for applications such as bendable displays and large-area sensors. The challenges for printed electronics, however, include characteristically slow switching frequencies and associated high supply voltages, which together impede widespread application. Combining printable high-capacitance dielectrics with printable high-mobility semiconductors could potentially solve these problems. Here we demonstrate fast, flexible digital circuits based on semiconducting carbon nanotube (CNT) networks and high-capacitance ion gel gate dielectrics, which were patterned by jet printing of liquid inks. Ion gel-gated CNT thin-film transistors (TFTs) with 50 μm channel lengths display ambipolar transport with electron and hole mobilities >20 cm2/V · s; these devices form the basis of printed inverters, NAND gates, and ring oscillators on both polyimide and SiO2 substrates. Five-stage ring oscillators achieve frequencies >2 kHz at supply voltages of 2.5 V, corresponding to stage delay times of 50 μs. This performance represents a substantial improvement for printed circuitry fabricated from functional liquid inks.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4388-4395 |
| Number of pages | 8 |
| Journal | ACS Nano |
| Volume | 4 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 24 2010 |
| Externally published | Yes |
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Keywords
- Ambipolar
- Carbon nanotube
- Delay time
- Flexible electronics
- Ion gel
- Printed electronics
- Thin-film transistor
ASJC Scopus subject areas
- Engineering(all)
- Materials Science(all)
- Physics and Astronomy(all)
Cite this
Printed, sub-3V digital circuits on plastic from aqueous carbon nanotube inks. / Ha, Mingjing; Xia, Yu; Green, Alexander; Zhang, Wei; Renn, Mike J.; Kim, Chris H.; Hersam, Mark C.; Frisbie, C. Daniel.
In: ACS Nano, Vol. 4, No. 8, 24.08.2010, p. 4388-4395.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Printed, sub-3V digital circuits on plastic from aqueous carbon nanotube inks
AU - Ha, Mingjing
AU - Xia, Yu
AU - Green, Alexander
AU - Zhang, Wei
AU - Renn, Mike J.
AU - Kim, Chris H.
AU - Hersam, Mark C.
AU - Frisbie, C. Daniel
PY - 2010/8/24
Y1 - 2010/8/24
N2 - Printing electronic components on plastic foils with functional liquid inks is an attractive approach for achieving flexible and low-cost circuitry for applications such as bendable displays and large-area sensors. The challenges for printed electronics, however, include characteristically slow switching frequencies and associated high supply voltages, which together impede widespread application. Combining printable high-capacitance dielectrics with printable high-mobility semiconductors could potentially solve these problems. Here we demonstrate fast, flexible digital circuits based on semiconducting carbon nanotube (CNT) networks and high-capacitance ion gel gate dielectrics, which were patterned by jet printing of liquid inks. Ion gel-gated CNT thin-film transistors (TFTs) with 50 μm channel lengths display ambipolar transport with electron and hole mobilities >20 cm2/V · s; these devices form the basis of printed inverters, NAND gates, and ring oscillators on both polyimide and SiO2 substrates. Five-stage ring oscillators achieve frequencies >2 kHz at supply voltages of 2.5 V, corresponding to stage delay times of 50 μs. This performance represents a substantial improvement for printed circuitry fabricated from functional liquid inks.
AB - Printing electronic components on plastic foils with functional liquid inks is an attractive approach for achieving flexible and low-cost circuitry for applications such as bendable displays and large-area sensors. The challenges for printed electronics, however, include characteristically slow switching frequencies and associated high supply voltages, which together impede widespread application. Combining printable high-capacitance dielectrics with printable high-mobility semiconductors could potentially solve these problems. Here we demonstrate fast, flexible digital circuits based on semiconducting carbon nanotube (CNT) networks and high-capacitance ion gel gate dielectrics, which were patterned by jet printing of liquid inks. Ion gel-gated CNT thin-film transistors (TFTs) with 50 μm channel lengths display ambipolar transport with electron and hole mobilities >20 cm2/V · s; these devices form the basis of printed inverters, NAND gates, and ring oscillators on both polyimide and SiO2 substrates. Five-stage ring oscillators achieve frequencies >2 kHz at supply voltages of 2.5 V, corresponding to stage delay times of 50 μs. This performance represents a substantial improvement for printed circuitry fabricated from functional liquid inks.
KW - Ambipolar
KW - Carbon nanotube
KW - Delay time
KW - Flexible electronics
KW - Ion gel
KW - Printed electronics
KW - Thin-film transistor
UR - http://www.scopus.com/inward/record.url?scp=78549240699&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78549240699&partnerID=8YFLogxK
U2 - 10.1021/nn100966s
DO - 10.1021/nn100966s
M3 - Article
VL - 4
SP - 4388
EP - 4395
JO - ACS Nano
JF - ACS Nano
SN - 1936-0851
IS - 8
ER -