Carbon Nanotube CMOS Analog Circuitry

Ho, Rebecca; Lau, Christian; Hills, Gage; Shulaker, Max M.

doi:10.1109/tnano.2019.2902739

Cited by 42 publications

(23 citation statements)

References 20 publications

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Section: Integration Of Flexible Swcnt Devices For Smart Systemsmentioning

confidence: 99%

Section: Computing Applications Of Electronic‐type‐enriched Swcntsmentioning

confidence: 99%

“…Two‐stage op‐amps were fabricated and achieved high gain, linearity, and temporal stability at supply voltages as low as 480 mV. On‐chip integration with a SWCNT FET chemoresistive breath sensor was further demonstrated, highlighting the potential use of these op‐amps as analog subsystems in mixed‐signal ICs 116. Figure 4c shows the circuit schematic for this breath sensor integrated with an analog subsystem, as well as a false‐colored SEM image of the fabricated device.…”

Section: Computing Applications Of Electronic‐type‐enriched Swcntsmentioning

confidence: 99%

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Chirality‐Enriched Carbon Nanotubes for Next‐Generation Computing

Rojas

Hersam

2020

Advanced Materials

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electronic, [3-4,4] and functional requirements. [5] Conventional silicon integrated circuit (IC) technology faces significant challenges in meeting these demands due to its limited mechanical flexibility, high temperature processing, and scaling limitations. Emerging alternative computing platforms based on other crystalline semiconductors suffer from similar limitations. Consequently, nextgeneration computing necessitates the exploration of radically different electronic materials. Single-walled carbon nanotubes (SWCNTs) are among the most promising and highly studied nanoelectronic materials. Due to their small size, [6,7] solutionprocessability, [8] chemical stability, [9] and chirality-dependent optoelectronic properties, [10] SWCNTs offer a number of unique advantages and are compatible with the complex requirements of future computing devices. Recent advances in chiral enrichment of polydisperse SWCNTs [8,10] have allowed their use as semiconducting channels in diverse settings including charge transport devices, [2] optical emitters and detectors, [11,12] and chemical sensors. [2,3,13,14] With this tunable functionality, a range of SWCNT-based computing applications have been realized, such as printed digital logic, [15] sub-10 nm complementary metal-oxide-semiconductor (CMOS) field-effect transistors (FETs), [16] neuromorphic devices, [17] single-photon emitters (SPE), [18] and enantiomer-recognition sensors. [14] Herein, we discuss recent advances in SWCNT-based computing technologies that process, manage, and communicate information, with an emphasis on the enabling role of chiral enrichment. Section 2.1 defines the different levels of chiral enrichment. Sections 2.2 and 2.3 describe direct growth methods and post-processing purification of SWCNTs for electronic-type and monochiral enrichment. Section 3 discusses applications of electronic-type-enriched SWCNTs such as wearables, highly scaled FETs, 3D logic-memory integration, and neuromorphic devices. Section 4 outlines applications of monochiral-enriched SWCNTs including monochiral FETs, optical emitters, photodetectors, and optoelectronic ICs. Section 5 considers recent progress toward enantiomerically pure SWCNTs. Finally, Section 6 presents an outlook for SWCNTs in next-generation computing applications including a delineation of remaining challenges and future opportunities. For the past half century, silicon has served as the primary material platform for integrated circuit technology. However, the recent proliferation of nontraditional electronics, such as wearables, embedded systems, and lowpower portable devices, has led to increasingly complex mechanical and electrical performance requirements. Among emerging electronic materials, single-walled carbon nanotubes (SWCNTs) are promising candidates for next-generation computing as a result of their superlative electrical, optical, and mechanical properties. Moreover, their chirality-dependent properties enable a wide range of emerging electronic applications including sub-10 nm complementary fie...

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Section: Integration Of Flexible Swcnt Devices For Smart Systemsmentioning

confidence: 99%

Section: Computing Applications Of Electronic‐type‐enriched Swcntsmentioning

confidence: 99%

Section: Computing Applications Of Electronic‐type‐enriched Swcntsmentioning

confidence: 99%

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Chirality‐Enriched Carbon Nanotubes for Next‐Generation Computing

Rojas

Hersam

2020

Advanced Materials

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“…The unique features of a CNTFET include its ballistic transport of charge carriers resulting in high mobility, large thermal conductivity, excellent electrostatic control, and high carrier transport. [13][14][15] All these advantages are attributed to the CNTs used in realizing a CNTFET. A CNTFET can be fabricated efficiently with the existing MOSFET fabrication infrastructure.…”

Section: Introductionmentioning

confidence: 99%

“…However, CNTFET-based circuitry too have many limitations, like CNTFET-based OTA suffers from lower BW issue, 24 CNTFET-based CC are unable to realize the ideal characteristics CCII 25 and CNTFET based OP-AMP suffers from poor gain BW. 13 In this work, we propose and simulate a new CNTFET-based class AB second generation current conveyor (CCII). The HSPICE simulation studies of the devices device use Stanford models for CNTFETs 26,27 and the BSIMv4.6.1 Berkeley Predictive Technology model for the conventional MOSFETs used.…”

Section: Introductionmentioning

confidence: 99%

CNTFETbased classABcurrent conveyorII: Design, analysis and waveform generator applications

Jogad

Loan

Afzal

et al. 2020

Int J Numerical Modelling

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In this work, we design and simulate a new class AB second generation current conveyor (CCII) employing 32 nm technology node carbon nanotube field effect transistors (CNTFET). The performance of the proposed CNTFET based class AB CCII (CNTFET-CCII) has been optimized by altering the number of carbon nanotubes (CNTs) (N), CNT pitch (S), and CNT diameter (D CNT). The proposed CCII has been compared with the conventional CMOS-based class AB CCII (CMOS-CCII). The simulation study has revealed that in the proposed CCII, the voltage and current bandwidth (BW) have enhanced by two orders, terminal X resistance

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Nanoscale Patterning of Carbon Nanotubes: Techniques, Applications, and Future

Corletto

Shapter

2020

Advanced Science

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Carbon nanotube (CNT) devices and electronics are achieving maturity and directly competing or surpassing devices that use conventional materials. CNTs have demonstrated ballistic conduction, minimal scaling effects, high current capacity, low power requirements, and excellent optical/photonic properties; making them the ideal candidate for a new material to replace conventional materials in next-generation electronic and photonic systems. CNTs also demonstrate high stability and flexibility, allowing them to be used in flexible, printable, and/or biocompatible electronics. However, a major challenge to fully commercialize these devices is the scalable placement of CNTs into desired micro/nanopatterns and architectures to translate the superior properties of CNTs into macroscale devices. Precise and high throughput patterning becomes increasingly difficult at nanoscale resolution, but it is essential to fully realize the benefits of CNTs. The relatively long, high aspect ratio structures of CNTs must be preserved to maintain their functionalities, consequently making them more difficult to pattern than conventional materials like metals and polymers. This review comprehensively explores the recent development of innovative CNT patterning techniques with nanoscale lateral resolution. Each technique is critically analyzed and applications for the nanoscale-resolution approaches are demonstrated. Promising techniques and the challenges ahead for future devices and applications are discussed.

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Carbon Nanotube CMOS Analog Circuitry

Cited by 42 publications

References 20 publications

Chirality‐Enriched Carbon Nanotubes for Next‐Generation Computing

Chirality‐Enriched Carbon Nanotubes for Next‐Generation Computing

CNTFETbased classABcurrent conveyorII: Design, analysis and waveform generator applications

Nanoscale Patterning of Carbon Nanotubes: Techniques, Applications, and Future

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