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The influence of carbon nanotubes in inkjet printing of conductive polymer suspensions

机译：碳纳米管在导电聚合物悬浮液喷墨印刷中的影响

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In this study, inkjet printing inks were formulated by combining the processability of the conductive polymer poly(3,4-ethylenedioxythiophene) (PEDOT) to the high conductivity of carbon nanotubes (CNTs). Conductive patterns were deposited on polymer films by piezoelectric inkjet printing. Several settings of printing were explored and analyzed by morphological observations and sheet resistance measurements. Performances of several CNTs were evaluated (single-walled, multi-walled and functionalized CNTs). Patterns can have sheet resistances from 10 537 to 225 /sq between two families of CNTs. Functionalized CNTs with polyethylene glycol functions appeared to be the best candidates for printed electronics. This best combination allows us to obtain sheet resistances as low as 225 /sq which is up to now one of the lowest resistances obtained by inkjet printing. This work also discusses the CNT network performances and emphasizes the degradation of electrical properties linked to the use of surfactants. This study represents an important step for the integration of CNTs in printed electronics applications and offers new opportunities to produce cost-effective electronics.
机译：在这项研究中，喷墨印刷油墨是通过将导电聚合物聚（3,4-乙撑二氧噻吩）（PEDOT）的可加工性与碳纳米管（CNT）的高导电性相结合而配制的。通过压电喷墨印刷将导电图案沉积在聚合物膜上。探索了几种印刷设置，并通过形态学观察和薄层电阻测量进行了分析。评估了几种CNT的性能（单壁，多壁和功能化CNT）。在两个CNT系列之间，图案的薄层电阻可以为10537至225 / sq。具有聚乙二醇功能的功能化CNT似乎是印刷电子产品的最佳选择。这种最佳的组合使我们能够获得低至225 / sq的薄层电阻，这是目前通过喷墨打印获得的最低电阻之一。这项工作还讨论了CNT网络的性能，并强调了与使用表面活性剂有关的电性能的下降。这项研究代表了将CNT集成到印刷电子应用中的重要一步，并为生产具有成本效益的电子提供了新的机会。

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