High-performance multivalued logic circuits based on optically tunable antiambipolar transistors

Panigrahi, Debdatta; Hayakawa, Ryoma; Wakayama, Yutaka

doi:10.1039/d1tc05858d

Cited by 14 publications

(23 citation statements)

References 46 publications

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“…2D vdW materials have broad application prospects in microelectronic devices such as field-effect transistors [32,99,100], diodes [101][102][103], and basic logic circuits [104][105][106]. One of the key issues in the design of these devices is how to dissipate heat efficiently, because in many cases, smaller electronic components generate a higher density of excess heat.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Phonon anharmonicity and thermal conductivity of two-dimensional van der Waals materials: A review

Yan

Wang

Hai

et al. 2022

Sci. China Phys. Mech. Astron.

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van der Waals (vdW) materials have extraordinary thermal properties due to the effect of quantum confinement, making them promising for thermoelectric energy conversion and thermal management in microelectronic devices. In this review, the mechanism of phonon anharmonicity originating from threeand four-phonon interactions is derived. The phonon anharmonicity of 2D vdW materials, involving the Grüneisen parameter, phonon lifetime, and thermal conductivity, is summarized and derived in detail. The size-dependent thermal conductivity of representative 2D vdW materials is discussed experimentally and theoretically. This review will present fundamental and advanced knowledge on how to evaluate the phonon anharmonicity in 2D vdW materials, which will aid the design of new structures and materials for applications related to energy transfer and conversion.

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Section: Thermal Conductivitymentioning

confidence: 99%

Phonon anharmonicity and thermal conductivity of two-dimensional van der Waals materials: A review

Yan

Wang

Hai

et al. 2022

Sci. China Phys. Mech. Astron.

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“…Extensive efforts have already been made to develop high-performance organic ternary logic circuits in order to achieve the essential features required for their practical implementation, such as a complete drain voltage to ground voltage sweep, well-balanced logical states, high noise margin, low-voltage operation, mechanical flexibility and controllability of the device characteristics through external signals (such as light). [23][24][25][26][27][28] However, to expand the logic operation beyond ternary states and to further improve the integration density of the organic integrated circuits, it is necessary to establish advanced strategies and novel device architectures. Generating multiple NDT characteristics in the AATs is a promising way to solve this issue as AATs with multiple NDTs induce more than three logical states in the inverter circuits.…”

mentioning

confidence: 99%

Antiambipolar Transistor with Double Negative Differential Transconductances for Organic Quaternary Logic Circuits

Panigrahi

Hayakawa

Wakayama

2023

Adv Funct Materials

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Organic integrated circuits have emerged as potential candidates for nextgeneration computing technology because of their low-cost production, light weight, and mechanical flexibility. However, the incompatibility of organic devices with modern lithographic techniques leads to a major bottleneck, that is, low integration density. Herein, it is attempted to solve this issue by developing an organic quaternary inverter that exhibits four distinguishable logic states and thus, can significantly improve the level of device integration. The key component of the inverter is a double-peaked antiambipolar transistor (DAAT) with a double sequential negative differential transconductance characteristic. First, the DAAT is developed by employing two lateral p-n heterojunctions, namely C8-BTBT/PTCDI-C8 and C8-BTBT/PhC2-BQQDI, in which three distinct conducting paths are produced in a step-by-step manner in accordance with the increase in the gate voltage (V G ). Next, the quaternary inverter circuit is implemented by connecting the DAAT with an n-type transistor. The inverter exhibits four logic states with a complete drain voltage to ground voltage sweep. Finally, a strategy of optimizing the thickness of the PTCDI-C8 layer to improve the voltage transfer characteristics of the quaternary inverters is demonstrated. This study, thus, represents a step toward the development of high-performance organic integrated circuits.

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“…AAT consists of a lateral heterojunction of C8-BTBT and PhC2-BQQDI layers. A continuous C8-BTBT layer was used between the V DD and V OUT electrodes to realize full-swing operation in the ternary inverters. , The electrical performance of AAT is shown in Figure S10. The detailed transport properties of AATs and the working principle of ternary inverters are discussed in our previous works. ,− …”

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confidence: 99%

“…Figure a shows the visible-light-assisted programming operation, which indicates that, under visible light, numerous electrons and holes are generated in the PhC2-BQQDI layer due to its optical absorption in the visible light wavelength range (Figure S6). When V IN = −60 V was applied, the holes were transferred from the PhC2-BQQDI layer to the underlying hole-trapping ZnPc-PS 4 layer. Then, they were localized at the ZnPc core assemblies.…”

mentioning

confidence: 99%

“…However, the C8-BTBT layer was not affected by the visible light irradiation due to its characteristic optical absorption only in the UV wavelength range (Figure S6 in the Supporting Information). Nevertheless, due to the application of V IN = −60 V, numerous holes from the C8-BTBT layer were injected and stored in ZnPc-PS 4 , and these accumulated holes impeded the hole conductance of the C8-BTBT layer, causing a 10 V shift in V th toward a negative V G (Figure d). This synergic shift in the V th of the individual transistors resulted in a large shift in the inverter VTC after the programming operation.…”

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confidence: 99%

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Optically Controllable Organic Logic-in-Memory: An Innovative Approach toward Ternary Data Processing and Storage

et al. 2022

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Logic-in-memory (LIM) has emerged as an energyefficient computing technology, as it integrates logic and memory operations in a single device architecture. Herein, a concept of ternary LIM is established. First, a p-type 2,7-dioctyl [1,8-gh]quinolone diimide (PhC2-BQQDI) transistor to obtain a binary memory inverter, in which a zinc phthalocyanine-cored polystyrene (ZnPc-PS 4 ) layer serves as a floating gate. The contrasting photoresponse of the transistors toward visible and ultraviolet light and the efficient holetrapping ability of ZnPc-PS 4 enable us to achieve an optically controllable memory operation with a high memory window of 18 V. Then, a ternary memory inverter is developed using an anti-ambipolar transistor to achieve a three-level data processing and storage system for more advanced LIM applications. Finally, low-voltage operation of the devices is achieved by employing a high-k dielectric layer, which highlights the potential of the developed LIM units for next-generation low-power electronics.

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High-performance multivalued logic circuits based on optically tunable antiambipolar transistors

Abstract: A high-performance organic ternary logic circuit is developed. High carrier mobilities of the organic semiconductors and their contrasting photoresponse achieved a full-swing operation, optical controllability and high noise margin in the devices.

Cited by 14 publications

References 46 publications

Phonon anharmonicity and thermal conductivity of two-dimensional van der Waals materials: A review

Phonon anharmonicity and thermal conductivity of two-dimensional van der Waals materials: A review

Antiambipolar Transistor with Double Negative Differential Transconductances for Organic Quaternary Logic Circuits

Optically Controllable Organic Logic-in-Memory: An Innovative Approach toward Ternary Data Processing and Storage

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