Among the polycyclic aromatic hydrocarbons, although perylene is commercially available and possesses higher solubility and stability than the others, its thin-film structures and organic field-effect transistor (OFET) performances have been rarely explored. To understand its potential as an active material in OFETs, the polymorphic behaviors, packing structures, and OFET characteristics of perylene were carefully examined. The well-oriented crystal arrays of perylene prepared via droplet-pinned crystallization delivered the highest hole mobility among the reported perylene OFETs. Fluorescence microscope, electron diffraction, and lattice modeling results confirm the polymorphic behavior of perylene in the solution-processed crystal arrays and its influences on the OFET performances. The concentration-sensitive and temperature-sensitive polymorphic behavior of perylene make processing conditions crucial in the preparation of pure-phase crystal arrays. The results show the great potential of perylene as an active material in low-cost and high-performance OFETs. Moreover, the knowledge regarding the polymorphic behavior of perylene provides opportunity for the further optimization of perylene-based OFETs.

中文翻译：

---

Per的多晶型行为及其对OFET性能的影响

在多环芳族烃中，尽管per是可商购的并且比其他per具有更高的溶解性和稳定性，但很少探索其薄膜结构和有机场效应晶体管（OFET）性能。为了了解其在OFETs中作为活性材料的潜力，仔细研究了ylene的多晶型行为，堆积结构和OFET特性。通过液滴固定结晶制备的per取向良好的晶体阵列在报道的perOFET中具有最高的空穴迁移率。荧光显微镜，电子衍射和晶格建模结果证实了per在溶液处理的晶体阵列中的多晶型行为及其对OFET性能的影响。per的浓度敏感和温度敏感的多晶型行为使得处理条件对于制备纯相晶体阵列至关重要。结果表明，per在低成本和高性能的OFET中作为活性材料具有巨大的潜力。此外，有关of的多晶型行为的知识为进一步优化基于per的OFETs提供了机会。