中国科学院合肥物质科学研究院强磁场科学中心坐落于安徽省合肥市风景秀丽的科学岛，2008年4月30日经中国科学院批准成立，依托中国科学院合肥物质科学研究院管理（科发人教字〔2008〕133号），其前身是2005年12月20日成立的“合肥强磁场科学技术研究中心”。中心目标：发展... 更多简介 +
稳态强磁场实验装置（Steady High Magnetic Field Facility，简称SHMFF）是国家发改委支持的“十一五”国家重大科技基础设施。SHMFF法人单位是中国科学院合肥物质科学研究院，共建单位是中国科学技术大学。各项任务以中国科学院强磁场科学中心为依托... 更多简介 +
报告人: Prof. Dr. Heinz von Seggern (德国Darmstadt技术大学)
报告题目：How to change color in organic light-emitting transistors
报告时间：2012年10月15日（周一）上午9:00
报告地点：强磁场中心五楼学术报告厅
报告摘要：
Recently the interest in organic light-emitting field-effect transistors (OLET) has increased rapidly as the devices combine switching behavior of transistors with light emission of LEDs. Ambipolar OLETs exhibit the ability to position the light emission zone in the transistor channel via applied drain or gate biases. Such capability is utilized to fabricate two different types of color tuneable OLETs. In the first approach two different acenes with different emission bands are deposited as a parallel stack in a OFET configuration. In a second approach the horizontal displacement of the recombination zone within the channel of a F8BT transistor is utilized. The spatially controllable light emission is achieved by exciting a wedge-like shaped colour conversion layer. The electroluminescence emission maximum can be shifted continuously by about 50 nm. The physics and potential applications of color tuneable OLETs will be discussed.
报告人简介：
Prof. von Seggern is a full professor in the Institute of Materials Science, Darmstadt University of Technology. His research interests cover X-ray storage phosphors for medical and scientific applications, organic electronics (OLEDs and OFETs), and piezoelectric polymers. He is a pioneer in organic light-emitting transistors, has the refereed publications of 250 (Number of citations: 3800) and 5 patents.
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