Antiambipolar Transistor with Double Negative Differential Transconductances for Organic Quaternary Logic Circuits
Antiambipolar Transistor with Double Negative Differential Transconductances for Organic Quaternary Logic Circuits
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DOI：
10.1002/adfm.202213899
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发表时间：
2023-02
影响因子：
19
通讯作者：
D. Panigrahi;R. Hayakawa;Y. Wakayama
中科院分区：
文献类型：
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作者：
D. Panigrahi;R. Hayakawa;Y. Wakayama
有机集成电路因其生产成本低、重量轻和机械灵活性而成为下一代计算技术的潜在候选者。然而，有机器件与现代光刻技术的不兼容导致了一个主要瓶颈，即集成密度低。本文试图通过开发一种有机四元反相器来解决这个问题，该反相器具有四种可区分的逻辑状态，因此可以显着提高器件集成度。逆变器的关键部件是具有双顺序负差分跨导特性的双峰反双极晶体管（DAAT）。首先，DAAT是通过采用两个横向p-n异质结（即C8-BTBT/PTCDI-C8和C8-BTBT/PhC2-BQQDI）开发的，其中随着栅极电压（VG）的增加，逐步产生三个不同的导电路径。接下来，通过将DAAT与n型晶体管连接来实现四进制反相器电路。该逆变器具有四种逻辑状态，具有完整的漏极电压对地电压扫描。最后，论证了优化 PTCDI-C8 层厚度以改善四元逆变器电压传输特性的策略。因此，这项研究代表了高性能有机集成电路发展的一步。
Organic integrated circuits have emerged as potential candidates for next‐generation 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 (VG). 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.