武汉光电论坛第156期

报告题目：第四次工业革命中的有机半导体技术

Organic Semiconductors in the Fourth Industrial Revolution

时 间：2019年5月28日10:00-12:00

地 点：光电国家研究中心A301

报 告 人：Prof. Bernard Kippelen，美国佐治亚理工学院

邀 请 人：周印华 教授

报告人简介：

Bernard Kippelen教授是美国佐治亚理工学院电子与计算机工程学院Joseph M. Pettit讲席教授。他的研究兴趣从研究有机纳米薄膜中的基础物理过程（非线性光学行为，电荷传输，光捕获与发射），到可印刷轻质、柔性光电子器件的设计、制备与性能分析。他是佐治亚理工学院欧洲校区创新平台Institut Lafayette (位于法国梅茨) 的共同创始人和主席，并且担任了佐治亚理工学院有机光电子中心主任。同时，Bernard Kippelen教授也是国际光学工程学会会士(SPIE Fellow)和美国光学学会会士(OSA Fellow)。

Biography:

Bernard Kippelen is the Joseph M. Pettit Professor of Electrical and Computer Engineering at the Georgia Institute of Technology, located in Atlanta, GA, USA. His research interests range from the investigation of fundamental physical processes (nonlinear optical activity, charge transport, light harvesting and emission) in organic-based nanostructured thin films, to the design, fabrication and testing of light-weight flexible optoelectronic devices based on hybrid printable materials. He is a co-founder and co-President of the Institut Lafayette, an innovation platform located on Georgia Tech’s European campus Georgia Tech Lorraine (Metz, France), and serves as Director of the Center for Organic Photonics and Electronics on the Georgia Tech campus in Atlanta. He is the fellow of Optical Society of America (OSA) and the fellow of Society of Photo-Optical Instrumentation Engineers (SPIE).

报告摘要：

在这次演讲中，我们将讨论可印刷有机共轭半导体分子和聚合物将如何产生革新性的技术。我们将呈现关于各种固态器件的最新进展，包括有机发光二极管（OLEDs）,有机光电探测器（OPDs），有机光伏器件（OPVs）和有机薄膜晶体管（OTFTs）。讲座将着重讲述器件中界面的重要性，也会给出一些例子去说明如何设计界面的电学性质。我们将展示一种简单的薄膜掺杂技术，通过将薄膜浸入杂多酸盐溶液中，使有机半导体薄膜表面被有限深度的掺杂。这种方法将大大降低该类器件的制备成本，简化器件结构，并且可以用于制备全印刷有机器件。为了说明该方法的简易性和通用性，我们将讨论如何构建具有简化结构的高性能有机太阳能电池。最后，我们将介绍近期我们关于有机薄膜晶体管（OTFTs）稳定性研究进展，表明有机光电子器件可以实现比非晶硅器件具有更高的稳定性。

Abstract:

In this talk, we will discuss how printable organic conjugated semiconducting molecules and polymers are creating new disruptive technologies that are impacting all industries. We will present recent advances in various solid-state device platforms including, organic light-emitting diodes (OLEDs), organic photodetectors (OPDs), organic photovoltaic devices (OPVs), and organic thin-film transistors (OTFTs). We will emphasize the importance of interfaces in devices and show examples on how to engineer their electrical properties. We will present a simple processing technique for the electrical doping of organic semiconductors over a limited depth near the surface of the film that is based on immersing the film into a polyoxometalate solution. Such approached can drastically reduce the fabrication cost of such devices, simplify device architecture, and lead to all-organic devices fabricated by all-additive printing techniques. As an illustration of the simplicity and versatility of this process we will discuss how high-performance organic solar cells with simplified architecture can be implemented. Finally, we will present the results of a detailed operational lifetime study of OTFTs showing that organic photonics and electronics can yield a stability level superior to that of amorphous silicon.

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