Synergy between Photoluminescence and Charge Transport Achieved by Finely Tuning Polymeric Backbones for Efficient Light-Emitting Transistor
Synergy between Photoluminescence and Charge Transport Achieved by Finely Tuning Polymeric Backbones for Efficient Light-Emitting Transistor
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DOI：
10.1021/jacs.1c01659
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发表时间：
2021-03-23
影响因子：
15
通讯作者：
Yu, Luping
中科院分区：
文献类型：
--
作者：
Yuan, Dafei;Awais, Mohammad A.;Yu, Luping
由于缺乏开发具有强荧光和高双极电荷迁移率的高性能聚合物材料的设计原则，限制了其在有机发光晶体管(OLET)、电泵浦有机激光器和其他先进电子器件中的性能。通过弱受体(TPTQ或TPTI)和弱施主(荧烯(F)或咔唑(C))的共聚，开发了一系列具有发光和电荷传输性能的半梯聚合物。研究发现，新的共聚物TPTQ-F的平面性增强、结晶度高、链间聚集的微妙平衡有助于获得高的双极电荷迁移率和光致发光量子产率。TPTQ-F在溶液处理的多层OLET器件中表现出优异的性能，外量子效率(EQE)为5.3%。
The lack of design principle for developing high-performance polymer materials displaying strong fluorescence and high ambipolar charge mobilities limited their performance in organic light-emitting transistors (OLETs), electrically pumped organic laser, and other advanced electronic devices. A series of semiladder polymers by copolymerization of weak acceptors (TPTQ or TPTI) and weak donors (fluorene (F) or carbazole (C)) have been developed for luminescent and charge transporting properties. It was found that enhanced planarity, high crystallinity, and a delicate balance in interchain aggregation obtained in the new copolymer, TPTQ-F, contributed to high ambipolar charge mobilities and photoluminescent quantum yield. TPTQ-F showed excellent performance in solution-processed multilayered OLET devices with an external quantum efficiency (EQE) of 5.3%.