Collaborative Research: Direct In-plane Formation of Large Organic Crystals for Active Nanostructured Devices

翻译后摘要：本研究的目的是联合收割机在材料科学，流体动力学和电气工程的专业知识，（1）实现一种新的方法，直接在大面积基板上生长毫米级的有机晶体和（2）利用晶体在有源纳米结构光电子学。该方法使用一个单步过程，其中无定形有机薄膜在室温下暴露于溶剂蒸气期间结晶。初步研究发现了拉长的面内晶体，比以前报道的任何晶体都大100倍以上，跨越整个衬底的长度（长达1厘米）。单晶的大尺寸将首次使各种高性能有机电子和光学器件的制造成为可能。 实现该计划的目标将首次允许有机晶体与现有光电器件集成，并以这种方式开发全新的技术。所提出的理论模型将促进晶体生长技术的合理扩展到广泛的有机材料，使其电子，光学和结构特性的基础研究。北达科他州州立大学已将材料科学和纳米技术作为优先研究领域，并计划建立一个校园范围内的跨学科BS/MS/博士课程。拟议的研究将促进启动和刺激这一教育计划的增长。此外，NDSU与拥有材料科学顶级课程的麻省理工学院建立关系，将使NDSU在这一研究和教育竞技场中站稳脚跟。

Abstract:The objective of this research is to combine expertise in materials science, fluid dynamics, and electrical engineering to (1) implement a new method for growth of millimeter-scale organic crystals directly on a large-area substrate and (2) utilize the crystals in active nanostructured optoelectronics. The approach uses a single-step process in which amorphous organic thin films crystallize during exposure to solvent vapor at room temperature. Preliminary investigations led to the discovery of elongated in-plane crystals that are more than 100 times larger than any previously reported, spanning the length of an entire substrate (up to 1 cm long). The large size of the single crystals will for the first time enable fabrication of a variety of high-performance organic electronic and optical devices. Achieving the targeted goals of this program would for the first time allow integration of organic crystals with existing optoelectronic devices and in such a way enable the development of entirely new technologies. The proposed theoretical modeling will facilitate rational extension of the crystal growth technique to a broad range of organic materials, enabling fundamental investigations of their electronic, optical and structural properties. North Dakota State University has targeted Materials Science and Nanotechnology as priority research areas, with plans to establish a campus-wide interdisciplinary BS/MS/PhD program. The proposed research will facilitate initiation and stimulate growth of this educational program. In addition, the establishment of a relationship between NDSU and MIT, which has top-ranking programs in Materials Science, will benefit NDSU as it establishes itself in this research and educational arena.