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Vertical Organic Permeable Dual-Base Transistors for Logic Circuits
: Received: 1 May 2020 / Approved: 2 May 2020 / Online: 2 May 2020 (13:29:45 CEST)
A peer-reviewed article of this Preprint also exists.
Journal reference: Nature Communications 2020
Vertical-channel organic dual-gate/base transistors would be highly interesting since vertical organic transistors are the fastest organic transistors demonstrated today. However, incorporating a dual gate/base structure into an ultra-short channel vertical architecture represents a substantial challenge. Here, we successfully realize a new device concept of vertical organic permeable dual-base transistors (OPDBTs), where either of both base electrodes can be used to change the on-currents and tune the threshold voltages. The optimized devices yield a high on-current density of 1.54 A cm-2 and a large current gain of 9.2×105, corresponding to a high transmission value of 99.998%. The detailed operation mechanisms are investigated by calibrated TCAD simulations with the Poole-Frenkel mobility model, Gaussian density of states and tunneling model. Finally, high-performance logic circuits, e.g. inverter, NAND/AND computation functions are demonstrated with one single OPDBT operating at supply voltages of < 2.0 V. We believe that OPDBTs offer a compact and technologically simple hardware platform with excellent application potential for vertical-channel organic transistors in complex logic circuits.
organic permeable dual-base transistors; vertical channel; logic circuits; threshold voltage; TCAD simulation
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