Diketopyrrolopyrrole(DPP)is one of the most promising building blocks for constructing polymer semiconductors with high charge-carrier mobilities in organic field-effect transistors(OFETs).In this study,a novel DPP-ba...Diketopyrrolopyrrole(DPP)is one of the most promising building blocks for constructing polymer semiconductors with high charge-carrier mobilities in organic field-effect transistors(OFETs).In this study,a novel DPP-based conjugated polymer,PDPPy-BDD,was designed and synthesized.The ambipolar field-effect transistor characteristics were realized with the average hole and electron mobilities of 3.5×10^(-3)and 3.07×10^(-2)cm^(2)V^(-1)s^(-1),respectively.Both the hole and electron mobilities could be successfully en-hanced by using a tetramethylammonium iodide(NMe4l)additive.Such an enhancement was attributed to the formation of stronger interchainπ-πstackings,the weakening of the face-on packing orientation in the thin film state,and the higher channel conductivi-ties in the OFETs.展开更多
基金the National Natural Science Foundation of China(grant no.62150610496)Department of Education of Guangdong Province University Innovation Foundation(2021KTSCX107)+2 种基金Shenzhen Science,Technology and Innovation Commission(JCYJ20220530113014033).P.S.is thankful to QUT for the financial support from the Australian Research Council(ARC)for the Discovery Grant(DP210103006)and QUT core funding(QUT/322120-0301/07)The synchrotron radiation experiments were performed at BL40B2 in SPring-8 with the approval of JASRI(Proposal No.2020A0651)The authors thank Dr.Hiroyasu Masunaga and Dr.Noboru Ohta(Japan Synchrotron Radiation Research Institute:JASRI)for assistance in the GIWAXS experiments。
文摘Diketopyrrolopyrrole(DPP)is one of the most promising building blocks for constructing polymer semiconductors with high charge-carrier mobilities in organic field-effect transistors(OFETs).In this study,a novel DPP-based conjugated polymer,PDPPy-BDD,was designed and synthesized.The ambipolar field-effect transistor characteristics were realized with the average hole and electron mobilities of 3.5×10^(-3)and 3.07×10^(-2)cm^(2)V^(-1)s^(-1),respectively.Both the hole and electron mobilities could be successfully en-hanced by using a tetramethylammonium iodide(NMe4l)additive.Such an enhancement was attributed to the formation of stronger interchainπ-πstackings,the weakening of the face-on packing orientation in the thin film state,and the higher channel conductivi-ties in the OFETs.
