报 告 人

黄维扬 教授，香港理工大学

报告时间

2019年9月28日下午15：30

报告地点

医化学院C-301会议室

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报告内容：

Organic   light-emitting diodes (OLEDs) show great promise of revolutionizing display   technologies in the scientific community. Heavy transition metal complexes have   recently gained tremendous academic and industrial research interest for   fabricating highly efficient phosphorescent OLEDs. Traditional   room-temperature phosphorescent dyes are monofunctional materials working   only as light-emitting centres but other key issues including charge   generation and transport remain to be addressed in the electroluminescence.   This talk highlights recent and current advances in developing new synthetic   strategies for multifunctional organometallic phosphors, which integrate both   luminescent and charge carrier injection/transport functions into the same   molecules so that they perform most, if not all, of the necessary functional roles   (viz. photoexcitation, charge injection and transport as well as recombination)   for achieving high-efficiency devices. Considerable focus is placed on the   design concepts towards the tuning capability of charge-transport   characteristics and phosphorescence emission color of this prominent class of   metallophosphors. On the other hand, white organic light-emitting diodes (WOLEDs) offer a   promising avenue to developing future energy-saving solid-state lighting   sources because of their intrinsic characters such as low driving voltages,   high brightness and efficiency, large area, etc. With the goal towards practical   application, many design strategies, including new materials synthesis,   judicious design of device configuration, wise management of charges/excitons   in different active layers, development of sophisticated and low cost   fabrication procedures, etc. have been put forward to achieve high efficiency,   good white color stability and quality. In this lecture, the most recent advances   in various aspects of the phosphorescent WOLEDs by our research group are also   presented.

承办学院

医药化工与材料工程学院

发布日期

2019-09-25

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