Vertical organic permeable dual-base transistors for logic circuits

• Published in: Nature communications Vol. 11; no. 1; p. 4725
• Main Authors: Guo, Erjuan, Wu, Zhongbin, Darbandy, Ghader, Xing, Shen, Wang, Shu-Jen, Tahn, Alexander, Göbel, Michael, Kloes, Alexander, Leo, Karl, Kleemann, Hans
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 18.09.2020; Nature Portfolio
• Subjects: 639/166/987; 639/301/1005/1007; 639/766/25; Humanities and Social Sciences; multidisciplinary; Science; Science (multidisciplinary)
• ISSN: 2041-1723; 2041-1723
• DOI: 10.1038/s41467-020-18576-5

The main advantage of organic transistors with dual gates/bases is that the threshold voltages can be set as a function of the applied second gate/base bias, which is crucial for the application in logic gates and integrated circuits. However, incorporating a dual gate/base structure into an ultra-short channel vertical architecture represents a substantial challenge. Here, we realize a device concept of vertical organic permeable dual-base transistors, where the dual base electrodes can be used to tune the threshold voltages and change the on-currents. The detailed operation mechanisms are investigated by calibrated TCAD simulations. Finally, power-efficient logic circuits, e.g. inverter, NAND/AND computation functions are demonstrated with one single device operating at supply voltages of <2.0 V. We believe that this work offers a compact and technologically simple hardware platform with excellent application potential for vertical-channel organic transistors in complex logic circuits. The development of vertical organic transistors with controllable threshold voltage is highly desirable for integrated circuit-based displays and sensors. Here, the authors report vertical organic permeable dual-based transistors with independently tunable on-currents and threshold voltages.