Issue 44, 2019

Low surface energy interface-derived low-temperature recrystallization behavior of organic thin films for boosting carrier mobility

Abstract

Due to low-temperature processing properties and high carrier mobilities, solution-processed small molecule organic thin-film transistors (OTFTs) are promising candidates for enabling low-cost flexible electronic circuits and displays. Much progress has been made in terms of material performance, however, there remain significant concerns about well understanding and controlling the morphology and polymorphism of soluble small molecule organic semiconductor thin films. Here, we investigated the physical mechanisms of the dielectric interfacial properties on the recrystallization of soluble small molecule organic semiconductor thin films, and demonstrated an effective route to improve the thin-film morphology and device performance. We found that a low surface energy interface can derive low-temperature recrystallization behavior of solution-processed organic semiconductor thin films, which has an important impact on boosting the carrier mobility of OTFTs. After low-temperature recrystallization, the carrier mobility of OTFTs is dramatically enhanced by about one order of magnitude. These attractive results suggest that this work allows a better understanding about the role of dielectric interfacial properties in assisting the thin-film recrystallization towards the desirable thin-film morphology, indicating promising potential for future low-cost high-performance solution-processed organic electronic devices.

Graphical abstract: Low surface energy interface-derived low-temperature recrystallization behavior of organic thin films for boosting carrier mobility

Supplementary files

Article information

Article type
Paper
Submitted
12 Sep 2019
Accepted
26 Sep 2019
First published
30 Sep 2019

J. Mater. Chem. C, 2019,7, 13778-13785

Low surface energy interface-derived low-temperature recrystallization behavior of organic thin films for boosting carrier mobility

S. Wang, Z. Wei, Y. Yang, X. Zhao, Q. Tang, Y. Tong and Y. Liu, J. Mater. Chem. C, 2019, 7, 13778 DOI: 10.1039/C9TC05043D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements