A case study of tuning the crystal polymorphs of organic semiconductors towards simultaneously improved light emission and field-effect properties. Issue 20 (10th April 2019)

• Record Type: Journal Article
• Authors: Liu, Dan; Li, Chenguang; Niu, Shujie; Li, Yang; Hu, Mengxiao; Li, Qingyuan; Zhu, Weigang; Zhang, Xiaotao; Dong, Huanli; Hu, Wenping
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 20(2019)
• Page Start: 5925
• Page End: 5930
• Publication Date: 2019-04-10
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c9tc01321k
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Simultaneously improved light emission and field-effect performance were achieved for an anthracene derivative, 1, 4-di(anthracen-9-yl)buta-1, 3-diyne (DABD) in its β-phase crystals, suggesting their potential applications in integrated optoelectronic devices. 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 cm 2 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.