Organic heterojunction transistors for mechanically flexible multivalued logic circuits

Abstract

Organic multivalued logic circuits (OMVLs) have drawn tremendous attention due to their high data processability and simple fabrication techniques. However, OMVLs have so far been achieved only on rigid silicon substrates, and this limits their potential for broader applications. In this study, we develop an organic ternary inverter on plastic substrates. The inverters showed well-balanced ternary logic states with high voltage gain and low power consumption. Importantly, the devices exhibited stable operation even after 100 bending cycles, demonstrating high flexibility and reliability. This device has high potential to attain mechanical flexibility and data handling capability at the same time.

Electrically Reconfigurable Organic Logic Gates: A Promising Perspective on a Dual‐Gate Antiambipolar Transistor

“…Due to this attractive feature, multivalued logic circuits (MVLs), such as ternary and quaternary inverters, have recently been realized, and their development is another significant strategy for improving the data processing capability of the currently used logic circuits. [39][40][41][42][43][44][45] In contrast to the abovementioned efforts on MVLs, our approach is to apply AATs to electrically reconfigurable logic circuits. A dual-gate configuration enables the control of the used Λ-shaped drain current by three input signals: bottom-gate, top-gate, and drain voltages.…”

“…Due to this attractive feature, multivalued logic circuits (MVLs), such as ternary and quaternary inverters, have recently been realized, and their development is another significant strategy for improving the data processing capability of the currently used logic circuits. [ 39–45 ]…”

Carrier‐Transport Mechanism in Organic Antiambipolar Transistors Unveiled by Operando Photoemission Electron Microscopy

“…We proposed using organic p-and n-type semiconductors as transistor channels due to the following advantages: high controllability of energy levels by external fields, mechanical flexibility, and facile processability of organic materials. [18][19][20][21][22][23][24][25][26][27][28] Thus far, we have achieved considerably high gate tunability of the drain currents in organic AATs. [18][19][20] The ratio of the peak-and off-drain currents reached four orders of magnitude.…”

“…of optically controllable MVL circuits is expanded to flexible applications. [27,28] We have achieved optically tunable ternary inverter operations with well-balanced output signals and extremely high bending endurance on flexible substrates. [27] Organic AATs are crucial for the development of new application platforms.…”

Tailoring the molecular weight of polymer additives for organic semiconductors

“…31 These research endeavors have opened up vast opportunities for organic semiconductors to be applied in high performance organic electronic devices such as organic thin film transistors, 32–35 organic gas sensors, 36–38 photovoltaic devices 39–41 and logic circuits. 42–44 In this section, we will review the important studies that investigated the solution processability and charge carrier mobility of organic semiconductor based thin film transistors, as well as their application in fabricating organic gas sensors.…”