Abstract Charge transport has been studied in indolo[2,3-a]carbazole, IC, a pentacyclic polyheteroaromatic system that can be easily synthesised using a one-step methodology. The characterisation of thin film Organic Field Effect Transistors (OFETs) and by Time Of Flight (TOF) has been used to determine the mobility in the interfacial region of the transistor and in the bulk of an organic layer, respectively. The mobility dependence on low electric fields has been studied in devices that work under different conditions, showing dissimilar trends for OFETs and TOF measurements. Interestingly, the later revealed a balanced ambipolar transport with negative electric field dependence of hole and electron mobilities.

中文翻译：

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吲哚[2,3-a]咔唑中的界面和体电荷传输

摘要 已经在吲哚 [2,3-a] 咔唑 (IC) 中研究了电荷传输，IC 是一种五环多杂芳族系统，可以使用一步方法轻松合成。薄膜有机场效应晶体管 (OFET) 和飞行时间 (TOF) 的表征已分别用于确定晶体管界面区域和有机层主体中的迁移率。已经在不同条件下工作的器件中研究了对低电场的迁移率依赖性，显示出 OFET 和 TOF 测量的不同趋势。有趣的是，后者揭示了一种平衡的双极传输，空穴和电子迁移率具有负电场依赖性。