A few-layer molecular film on polymer substrates to enhance the performance of organic devices
A few-layer molecular film on polymer substrates to enhance the performance of organic devices
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DOI：
10.1038/s41565-017-0018-6
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发表时间：
2018-02
影响因子：
38.3
通讯作者：
T. Yokota;Takashi Kajitani;R. Shidachi;T. Tokuhara;M. Kaltenbrunner;Yoshiaki Shoji;Fumitaka Ishiwari
中科院分区：
文献类型：
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作者：
T. Yokota;Takashi Kajitani;R. Shidachi;T. Tokuhara;M. Kaltenbrunner;Yoshiaki Shoji;Fumitaka Ishiwari
在有机电子学中，通过自组装单分子膜对介质基板进行功能化被认为是一种有效的表面修饰策略，可以显着提高所产生的器件性能。然而，这种技术不适用于柔性电子产品中通常使用的聚合物基板。在这里，我们报道了基于石蜡三脚架的有机改性剂，它在聚合物表面自组装成完全取向的二维六方三联体阵列和一维层堆积结构。这种几层膜类似于传统的无机衬底上的自组装单分子膜，因为它们中和了聚合物表面。此外，Triptycene薄膜显著提高了有机半导体的结晶度和有机薄膜晶体管的整体性能，从而能够在高振荡速度和低工作电压的聚合物衬底上制造高性能的有机互补电路。
In organic electronics the functionalization of dielectric substrates with self-assembled monolayers is regarded as an effective surface modification strategy that may significantly improve the resulting device performance. However, this technique is not suitable for polymer substrates typically used in flexible electronics. Here, we report organic modifiers based on a paraffinic tripodal triptycene, which self-assembles into a completely oriented two-dimensional hexagonal triptycene array and one-dimensional layer stacking structure on polymer surfaces. Such few-layer films are analogous to conventional self-assembled monolayers on inorganic substrates in that they neutralize the polymer surface. Furthermore, the triptycene films significantly improve the crystallinity of an organic semiconductor and the overall performance of organic thin-film transistors, therefore enabling the fabrication of high-performance organic complementary circuits on polymer substrates with high oscillation speeds and low operation voltage.