Fully Integrated Microscale Quasi‐2D Crystalline Molecular Field‐Effect Transistors. (19th June 2019)

• Record Type: Journal Article
• Authors: Bandari, Vineeth Kumar; Gu, Yue; Shi, Subao; Nan, Yang; He, Keqiang; Li, Yang; Bandari, Nooshin; Moradi, Somayeh; Tian, Hongkun; Zhu, Feng; Geng, Yanhou; Yan, Donghang; Schmidt, Oliver G.
• Is Part Of: Advanced functional materials. Volume 29:Number 36(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-06-19
• Subjects: 2D -- integration -- microscale transistors -- molecular semiconductors -- organic field‐effect transistors; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201903738
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Monolithic integration of microscale organic field‐effect transistors (micro‐OFETs) is the only and inevitable path toward low‐cost large‐area electronics and displays. However, to date, such an ultimate technology has not yet evolved due to challenges in positioning and patterning highly crystalline microscale molecular layers as well as in developing micrometer scale integration schemes. In this work, by mastering the local growth of molecular semiconductors on pre‐defined terraces, single‐crystal quasi‐2D molecular layers tens of square micrometers in size are created in dense periodic arrays on a Si substrate. Nondestructive photolithographic processes are developed to pattern micro‐OFETs with mobilities up to 34.6 cm 2 V −1 s −1 . This work demonstrates the feasibility to integrate arrays of short‐channel micro‐OFETs into electronic circuitry by highly parallel and size scalable fabrication technologies. Abstract : Monolithic integration of microscale organic field‐effect transistors (micro‐OFETs) could determine future low‐cost integrated circuits and large‐area displays. In this work, by mastering the local growth of molecular semiconductors on pre‐defined terraces and developing nondestructive photolithographic processes, micro‐OFETs based on single‐crystal quasi‐2D molecular layers tens of square micrometers in size are created, delivering high mobilities up to 34.6 cm 2 V −1 s −1 .