Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China.
ACS Appl Mater Interfaces. 2019 Oct 2;11(39):36205-36212. doi: 10.1021/acsami.9b10089. Epub 2019 Sep 10.
Highly ordered organic semiconductor single-crystal (OSSC) arrays are ideal building blocks for functional organic devices. However, most of the current methods are only applicable to fabricate OSSC arrays of a single component, which significantly hinders the application of OSSC arrays in integrated organic circuits. Here, we present a universal approach, termed three-dimensional (3D) wettability-induced sequential assembly that can programmatically and progressively manipulate the crystallization locations of different organic semiconductors at the same spatial position using a 3D microchannel template, for the fabrication of the two-component OSSC arrays. As an example, we successfully prepared two-component, bilayer structured OSSC arrays consisting of n-type ,'-bis(2-phenylethyl)-perylene-3,4:9,10-tetracarboxylic diimide and p-type 6,13-bis(triisopropylsilylethynyl)pentacene microbelts. The bicomponent OSSCs show ambipolar carrier transport properties with hole and electron mobilities of 0.342 and 0.526 cm V s, respectively. Construction of complementary inverters is further demonstrated based on the two-component OSSCs. The capability of integration of multicomponent OSSC arrays opens up unique opportunities for future high-performance organic complementary circuits.
高度有序的有机半导体单晶（OSSC）阵列是功能性有机器件的理想构建模块。然而，目前大多数方法仅适用于制备单一成分的 OSSC 阵列，这极大地限制了 OSSC 阵列在集成有机电路中的应用。在这里，我们提出了一种通用方法，称为三维（3D）润湿性诱导顺序组装，可以使用 3D 微通道模板在同一空间位置上程序化和逐步操纵不同有机半导体的结晶位置，从而制备出两种成分的 OSSC 阵列。例如，我们成功制备了由 n 型二（2-苯乙基）-苝-3,4:9,10-二羧酸二酰亚胺和 p 型 6,13-双（三异丙基硅基乙炔基）并五苯微带组成的两种成分、双层结构的 OSSC 阵列。双组分 OSSC 表现出双极性载流子输运特性，空穴和电子迁移率分别为 0.342 和 0.526 cm² V⁻¹ s⁻¹。进一步基于两种成分的 OSSC 演示了互补型反相器的构建。多组分 OSSC 阵列的集成能力为未来高性能有机互补电路开辟了独特的机会。
