@article{b8230dbbb08a473ab18dcb2641a9e9c4,
title = "Naphthodithieno[3,2-b]thiophene-based donor-acceptor copolymers: Synthesis, characterization, and their photovoltaic and charge transport properties",
abstract = "Herein, we report the synthesis, characterization, and their photovoltaic and field-effect properties of two dialkoxyl-substituted naphthodithieno[3,2-b]thiophene (NDTT)-based copolymers, namely P1 and P2. The NDTT-based copolymers exhibit broad absorption profiles throughout the visible spectrum up to ca. 800 nm. The copolymers have HOMO/LUMO energy levels of ca. -5.14 eV/-3.52 eV. The dialkoxyl-substituted NDTT units endow the copolymers with enhanced solution processability, and crystalline stacking thin films with small π-π distances of down to 3.59 {\AA}. Polymer-fullerene bulk heterojunction solar cells that fabricated from a blend of P2/PC71BM using diiodooctane as a solvent additive, afforded the highest power conversion efficiency of 3.54%. Solution-processed polymer field-effect transistors based on P1 with bottom-gate bottom-contact geometry exhibited promising hole mobilities of 0.070 cm2 V-1 s-1.",
keywords = "Charge transport properties, Copolymers, Isoindigos, Naphthodithieno[3,2-b]thiophenes, Photovoltaic properties",
author = "Weifeng Zhang and Keli Shi and Weilong Zhou and Zhaoguang Li and Zhihui Chen and Jie Xu and Donghang Yan and Yanchun Han and WONG, {Ricky M S} and Fenghong Li and Gui Yu",
note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China ( 21474116 and 51233006 ) and the Strategic Priority Research Program of the Chinese Academy of Sciences ( XDB12030100 ). This work was also supported by GRF ( HKBU 203212 ), Theme-Based Research Scheme (Project No. [ T23-713/11 ]), Hong Kong Research Grants Council and Open Research Fund of State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences . The GXRD tests were carried out at 1W1A station of Beijing Synchrotron Radiation Facility (BSRF), BL16B1 Station of Shanghai Synchrotron Radiation Facility (SSRF), and 23A1 Station of National Synchrotron Radiation Research Centre (NSRRC, Taiwan). The authors gratefully thank the assistance of scientists from the stations during the experiments. Appendix A ",
year = "2016",
month = aug,
doi = "10.1016/j.dyepig.2016.03.048",
language = "English",
volume = "131",
pages = "1--8",
journal = "Dyes and Pigments",
issn = "0143-7208",
publisher = "Elsevier B.V.",
}
