有机－无机复合异质结构筑及新型光电器件研究

Organic-inorganic heterostructure-based electronics are attracting huge interest owing to their potential applications in the future HD display, wearable flexible electronic devices, human health and environmental monitoring because of the advantages of containing both organic and inorganic materials, enabling more choices of material combination, more architectures of device fabrication and excellent compatibility with the flexible substrates. In this project, by designing organic-inorganic heterostructures combining with functional organic molecule films and 2D materials with outstanding optoelectronic properties, we are focusing on investigation of the nature of charge transfer across the interface, bring insight into the basic rules of carrier transport controlled with the gate electric field, aiming for development of a flexible logical circuit application based on a vertical staking organic-inorganic layers. With elaborate researching, we attempt to optimize an efficient and controllable process for fabrication of vdW heterostructures, improve the contact and injection resistance between active layer and metal electrodes, achieve high interface quality between active layer and dielectric layer, aiming for the high performance of novel vdW photoelectric devices. We hope to open a new paradigm of organic-inorganic heterostructures in design of flexible electronic devices and logic circuits.

有机－无机复合异质结构兼具有机和无机材料的优势，如：材料光电性质选择更丰富、工艺制备方案更多样以及能与柔性基底良好兼容等。因此，有机－无机异质结构光电器件有望广泛应用于新型高清显示、可穿戴柔性电子器件及人体健康和环境监控等领域。本项目选取有机分子薄膜及光电性质优异的二维层状材料构建新型有机－无机复合异质结构，探究功能有机分子与二维材料间电荷转移的本质；澄清栅极电场在有机－无机异质结界面对载流子传输调控的基本规律；开发基于垂直堆垛的有机－无机异质结在柔性逻辑电路的应用。通过持续研究寻找范德化异质结构筑的高效可控制备工艺，改善活性层与金属电极间的接触及注入电阻、提高活性层与介电层间的界面质量，进一步提升光电器件的性能。开创新型有机－无机异质结构在柔性电子器件以及逻辑电路设计方面的新应用。

有机－无机复合异质结构兼具有机和无机材料的优势，如：材料光电性质选择更丰富 、工艺制备方案更多样以及能与柔性基底良好兼容等。在本项目研究中，我们选取多种有机分子薄膜及光电性质优异的二维层状材料构建了新型有机－无机复合异质结构 ，探究了功能有机分子与二维材料间电荷转移的本质；澄清了栅极电场在有机－无机异质结界 面对载流子传输调控的基本规律；开发出基于垂直堆垛的有机－无机异质结在柔性逻辑电路的应用。研究成果已高质量学术论文发表在国际上高影响力的杂志期刊或参加国际国内学术会议及国内发明专利，数量达到近30项。这些研究有望广泛应用于新型高清显示、可穿戴柔性电子器件及人体健康和环境监控等领域。本项目还通过持续研究寻找到新的范德化异质结构筑的高效可控制备工艺，基于改善活性层与金属电 极间的接触及注入电阻、提高活性层与介电层间的界面质量，进一步提升了功能光电器件的性能。总之本项目达到了推进新型有机－无机异质结构在柔性电子器件以及逻辑电路设计方面的新应用的目标。