Abstract：
Doping plays a crucial role in modulating and enhancing the performance of organic semiconductor (OSC) devices. In this study, the critical role of dopants is underscored in shaping the morphology and structure of OSC films, which in turn profoundly influences their properties. Two dopants, trityl tetrakis(pentafluorophenyl) (TrTPFB) and N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate (DMA-TPFB), are examined for their doping effects on poly(3-hexylthiophene) (P3HT) and PBBT-2T host OSCs. It is found that although TrTPFB exhibits higher doping efficiency, OSCs doped with DMA-TPFB achieve comparable or even enhanced electrical conductivity. Indeed, the electrical conductivity of DMA-TPFB-doped P3HT reaches over 67 S cm-1, which is a record-high value for mixed-solution-doped P3HT. This can be attributed to DMA-TPFB inducing a higher degree of crystallinity and reduced structural disorder. Moreover, the beneficial impact of DMA-TPFB on the OSC films\' morphology and structure results in superior thermoelectric performance in the doped OSCs. These findings highlight the significance of dopant-induced morphological and structural considerations in enhancing the film characteristics of OSCs, opening up a new avenue for optimization of dopant performance.
摘要：
掺杂在调节和增强有机半导体（OSC）器件的性能中起着至关重要的作用。在这项研究中,强调了掺杂剂在塑造OSC膜的形态和结构中的关键作用，这反过来又深刻地影响了它们的属性。两种掺杂剂,三苯甲基四（五氟苯基）（TrTPFB）和N，四(五氟苯基)硼酸N-二甲基苯胺(DMA-TPFB),检查了它们对聚（3-己基噻吩）（P3HT）和PBBT-2T宿主OSC的掺杂作用。发现尽管TrTPFB表现出更高的掺杂效率，掺杂有DMA-TPFB的OSC实现相当的或甚至增强的电导率。的确,掺杂DMA-TPFB的P3HT的电导率达到67Scm-1以上，这是混合溶液掺杂的P3HT的创纪录值。这可以归因于DMA-TPFB诱导更高程度的结晶度和减少的结构无序。此外，DMA-TPFB对OSC膜形态和结构的有益影响导致掺杂OSC的优异的热电性能。这些发现强调了掺杂剂诱导的形态和结构考虑在增强OSC的膜特性方面的重要性。为优化掺杂剂性能开辟了一条新途径。
