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Updated: Jan 26, 2026

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
Published on: November 7, 2016
Improving the Electronic Transporting Property for Flexible Field-Effect Transistors with Naphthalene Diimide-Based
Jing Ma1,2, Zhiyuan Zhao1, Yunlong Guo1
1Beijing National Laboratories for Molecular Sciences, CAS Key Laboratories of Organic Solids, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.
Abstract:
n-Type organic/polymeric semiconductors with high electron mobilities are highly demanded for future flexible organic circuits. Except for developing a new conjugated backbone, recent studies show that side-chain engineering also plays an indispensable role in boosting the charge-transporting property. In this paper, we report a new polymer PNDI2T-DTD with a representative n-type naphthalene diimide (NDI)-bithiophene backbone for high-performance n-type flexible thin-film transistors through branching/linear side-chain engineering strategy. Serving as the flexible side chains, the linear/branching side-chain pattern is found to be effective in tuning the preaggregation behavior in solution and the packing ordering of polymeric chains, resulting in the improvement of thin-film crystallinity. The electron mobility of the thin film of PNDI2T-DTD on flexible substrates can reach 1.52 cm2 V-1 s-1, which is approximately five times higher than that of PNDI2T-DT with the same conjugated backbone and only branching alkyl chains.
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