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Issue 20, 2019
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A case study of tuning the crystal polymorphs of organic semiconductors towards simultaneously improved light emission and field-effect properties

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Abstract

Simultaneously modulating the optical and electrical properties of organic semiconductors is crucial for advancing their desired applications in integrated optoelectronic devices. Here, we realize a goal of optimizing the light emission and field-effect properties of an anthracene derivative, 1,4-di(anthracen-9-yl)buta-1,3-diyne (DABD) by tuning its crystal polymorphs. Two phase crystals, that is α-phase rhombic-sheet crystals and β-phase ribbon-shape crystals of DABD are controllably obtained. Compared with the α-phase crystals, the β-phase DABD crystals exhibit better integrated optoelectronic performances with charge carrier mobility of 0.25 cm2 V−1 s−1 and strong fluorescent emission. This work suggests that polymorph engineering would be a promising avenue to realize simultaneous modulation of the multifunctional properties of organic semiconductors towards appropriate applications in organic optoelectronics.

Graphical abstract: A case study of tuning the crystal polymorphs of organic semiconductors towards simultaneously improved light emission and field-effect properties

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Article information


Submitted
10 Mar 2019
Accepted
01 Apr 2019
First published
03 Apr 2019

J. Mater. Chem. C, 2019,7, 5925-5930
Article type
Communication

A case study of tuning the crystal polymorphs of organic semiconductors towards simultaneously improved light emission and field-effect properties

D. Liu, C. Li, S. Niu, Y. Li, M. Hu, Q. Li, W. Zhu, X. Zhang, H. Dong and W. Hu, J. Mater. Chem. C, 2019, 7, 5925
DOI: 10.1039/C9TC01321K

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