Organic Functional Molecule‐Based Single‐Crystalline Nanowires for Optical Waveguides and Their Patterned Crystals,Advanced Optical Materials

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Organic Functional Molecule‐Based Single‐Crystalline Nanowires for Optical Waveguides and Their Patterned Crystals
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2020-01-15 , DOI: 10.1002/adom.201901643
Xiao Zhang _{1,

2} , Jun‐Jie Wu ₃ , Hanfei Gao _{4,

5} , Yuyan Zhao _{4,

5} , Weiheng Qi _{5,

6} , Jiangang Feng ₄ , Xue‐Dong Wang ₃ , Yuchen Wu ₄ , Lei Jiang _{2,

4}

Affiliation

The deterministic manufacturing and patterning of high‐quality organic single crystal semiconductors are core opportunities and challenges for large‐scale integrated functional devices with high efficiency and high performance. As for the solution patterning for the fabrication of the organic semiconductors, various methods are reported to efficiently control the position, alignment, and size of organic structures. Nevertheless, the poor control of the dewetting dynamics of organic solution leads to the low crystallinity and disordered crystallographic orientation of as‐fabricated organic architectures, which can limit their device performance. Herein, by use of the micropillar‐structured template with asymmetric wettability, the patterned organic 1D single crystals with precise position and geometry, flat morphology, and high alignment can be constructed. Moreover, the nanowire arrays are demonstrated with active optical waveguiding. In addition, the other patterned architectures of circle, triangle, square, pentagon, and hexagon shapes can also be constituted by regulating the surface geometry of substrates. This work not only facilitates the fundamental understanding on the patterning and crystallization of organic architectures, but also contributes greatly to the development of large‐scale assembly technology for patterning micro/nanostructures.

中文翻译：

用于光波导的有机功能分子基单晶纳米线及其图案化晶体

确定性的制造和高质量有机单晶半导体的图案化是具有高效率和高性能的大规模集成功能器件的核心机遇和挑战。关于用于制造有机半导体的溶液图案化，已经报道了各种方法来有效地控制有机结构的位置，取向和尺寸。然而，对有机溶液去湿动力学的控制不当会导致预制有机体系结构的低结晶度和无序的晶体学取向，这可能会限制其器件性能。在此，通过使用具有非对称润湿性的微柱结构模板，可以形成具有精确位置和几何形状，平坦形态的图案化有机一维单晶，并且可以构造高度对准。此外，用有源光波导演示了纳米线阵列。另外，还可以通过调节基板的表面几何形状来构成圆形，三角形，正方形，五边形和六边形的其他图案化架构。这项工作不仅促进了对有机体系结构的图案化和结晶化的基本理解，而且还极大地促进了用于对微/纳米结构进行图案化的大规模装配技术的发展。

更新日期：2020-03-20

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