Eliminating Nonideal Transfer Characteristics of Polymer Field-Effect Transistors by Isoindigo-Based Molecular Electron Acceptors - Details

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Abstract：

High-mobility　organic　field-effect　transistors　(OFETs),　particularly　those　based　on　donor-acceptor　polymers,　often　exhibit　nonideal　transfer　characteristics,　limiting　their　practical　applications.　Doping　these　semiconductors　with　specifically　designed　organic　molecular　electron　acceptors　can　effectively　address　these　deficiencies.　By　employing　isoindigo-based　acceptors　with　appropriate　electron-withdrawing　groups　as　dopants　in　diketopyrrolopyrrole-thienothiophene-based　OFETs,　we　achieve　an　outstanding　transistor　performance　with　ideal　transfer　characteristics.　Comprehensive　analyses　using　ultraviolet-visible　absorption,　X-ray　diffraction,　ultraviolet　photoelectron　spectroscopy,　and　electrical　measurements　demonstrate　that　p-dopants　play　crucial　roles　in　enhancing　electron　transfer,　reducing　charge　carrier　traps,　and　lowering　contact　resistance,　thereby　eliminating　the　typical　“double　slope”　and　hysteresis　in　OFET　transfer　characteristics.　©　2025　American　Chemical　Society.

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donor−acceptor polymer double-slope isoindigo acceptor organic field-effect transistors transfer curve

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[ 1 ] [Qiu X.]Guangdong Provincial Engineering and Technology Research Center for Light and Health, School of Health Science, Guangdong Pharmaceutical University, Guangzhou, 510000, China
[ 2 ] [Tang Y.]School of Physical Science and Technology, Chongqing Key Lab of Micro & Nano Structure Optoelectronics, Southwest University, Chongqing, 400715, China
[ 3 ] [Shi S.]Guangdong Provincial Engineering and Technology Research Center for Light and Health, School of Health Science, Guangdong Pharmaceutical University, Guangzhou, 510000, China
[ 4 ] [Cai Y.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
[ 5 ] [Zhang Q.]School of Physical Science and Technology, Chongqing Key Lab of Micro & Nano Structure Optoelectronics, Southwest University, Chongqing, 400715, China
[ 6 ] [Deng P.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
[ 7 ] [Lei Y.]School of Physical Science and Technology, Chongqing Key Lab of Micro & Nano Structure Optoelectronics, Southwest University, Chongqing, 400715, China

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Source ：

ACS Applied Polymer Materials

ISSN： 2637-6105

Year： 2025

Issue： 9

Volume： 7

Page： 5448-5455

4 . 5 0 0

JCR@2023

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