@article{23aa8eea835044b096b287993be1ede3,
title = "Inch-Scale Grain Boundary Free Organic Crystals Developed by Nucleation Seed-Controlled Shearing Method",
abstract = " Crystals of organic semiconductors are excellent candidates for flexible and array-based electronics. Large-scale synthesis of organic crystals in a controllable way while maintaining homogeneous single-crystal property has been a great challenge. The existence of grain boundaries and small crystal domains, however, restrict the device performance and limit the access to commercially viable organic electronics in the industry. Herein, we report the inch-scale synthesis of highly oriented 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C 8 -BTBT) organic single crystal by nucleation seed-controlled shearing method. The organic field-effect transistors developed from such single crystal have excellent carrier mobility as high as 14.9 cm 2 V -1 s -1 and uniformity (standard deviation is 1.3 cm 2 V -1 s -1 ) of 225 devices. We also found that the rotation of the principal axis in the crystal is governed by the orientations of seeds and the possible mechanism behind this phenomenon is proposed based on the density functional theory calculations. We anticipate that this proposed approach will have great potential to be developed as a platform for the growth of organic crystals with high crystallinity on a large scale. ",
keywords = "grain boundary-free, nucleation, organic field-effect transistor, single crystal, solution shearing",
author = "Zhiwen Zhou and Zhichao Zhang and Qisheng Wu and Xudong Ji and Jinlan Wang and Xiaocheng Zeng and Feng, {Shien Ping} and Chan, {Paddy Kwok Leung}",
note = "Funding Information: Z.Z. and Z.Z. contributed equally to this work. P.K.L.C. thanks the support from the General Research Fund (GRF) under Grant No. HKU 17264016, the NSFC/RGC Joint Research Scheme under Grant No. HKU 715/14. J.W. is supported by the National Key Research and Development Program of China (No. 2017YFA0204800). Q.W. is supported by China Scholarship Council (CSC, 201606090079). X.Z. is supported by a grant from Nebraska Center for Energy Sciences Research and a fund from Beijing Advanced Innovation Center for Soft Matter Science & Engineering for summer visiting scholar. Funding Information: Z.Z. and Z.Z. contributed equally to this work. P.K.L.C. thanks the support from the General Research Fund (GRF) under Grant No. HKU 17264016, the NSFC/RGC Joint Research Scheme under Grant No. HKU 715/14. J.W. is supported by the National Key Research and Development Program of China (No. 2017YFA0204800). Q.W. is supported by China Scholarship Council (CSC, 201606090079). X.Z. is supported by a grant from Nebraska Center for Energy Sciences Research and a fund from Beijing Advanced Innovation Center for Soft Matter Science & Engineering for summer visiting scholar. The computational resources utilized in this research were provided by National Supercomputing Center in Tianjin, NC3 computer facility and Holland Supercomputing Center in the University of Nebraska-Lincoln. Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",
year = "2018",
month = oct,
day = "17",
doi = "10.1021/acsami.8b09655",
language = "English (US)",
volume = "10",
pages = "35395--35403",
journal = "ACS Applied Materials and Interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "41",
}