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首页> 外文期刊>Advanced Materials >Self-Doping Naphthalene Diimide Conjugated Polymers for Flexible Unipolar n-Type OTFTs
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Self-Doping Naphthalene Diimide Conjugated Polymers for Flexible Unipolar n-Type OTFTs

机译:Self-Doping Naphthalene Diimide Conjugated Polymers for Flexible Unipolar n-Type OTFTs

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摘要

The development of high-performance organic thin-film transistor (OTFT)materials is vital for flexible electronics. Numerous OTFTs are so far reportedbut obtaining high-performance and reliable OTFTs simultaneously for flexibleelectronics is still challenging. Herein, it is reported that self-doping inconjugated polymer enables high unipolar n-type charge mobility in flexibleOTFTs, as well as good operational/ambient stability and bending resistance.New naphthalene diimide (NDI)-conjugated polymers PNDI2T-NM17and PNDI2T-NM50 with different contents of self-doping groups on theirside chains are designed and synthesized. The effects of self-doping on theelectronic properties of resulting flexible OTFTs are investigated. The resultsreveal that the flexible OTFTs based on self-doped PNDI2T-NM17 exhibit unipolarn-type charge-carrier properties and good operational/ambient stabilitythanks to the appropriate doping level and intermolecular interactions. Thecharge mobility and on/off ratio are fourfold and four orders of magnitudehigher than those of undoped model polymer, respectively. Overall, the proposedself-doping strategy is useful for rationally designing OTFT materialswith high semiconducting performance and reliability.

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