讲座题目:Thermally Activated Delayed Fluorescence: Fundamentals and applications
主讲人:Prof.Mário Berberan-Santos
主持人：张三军研究员
讲座时间：2017.9.20 13:30
讲座地点：理科大楼A510报告厅
主办单位：精密光谱科学与技术国家重点实验室与科技处
报告人简介：
Education
B Sc Chemical Engineering, 1984, Instituto Superior Tecnico
Ph D Chemistry, 1989, Instituto Superior Tecnico
Habilitation (Agregação), 1997, Instituto Superior Tecnico
Career/Employment
Instituto Superior Tecnico, Lecturer (Assistente), 1984-1989; Assistant Professor, 1989-1993
CNAM (Paris, France) and Université de Paris-Sud, Post-doctoral Research Fellow, 1990-91
Instituto Superior Tecnico, Associate Professor, 1993-2009; Professor, 2009-present
Specialization
(i) main field
Chemistry (Physical Chemistry/Photochemistry/Analytical Chemistry)
(ii) other fields
Nanoscience, Materials
(iii) current research interest
Luminescence of nanostructured systems and dynamics of excited-state processes, including energy transfer and delayed fluorescence, and temperature, optical sensing.
报告摘要：
Thermally Activated Delayed Fluorescence (TADF), concerns a special type of fluorescence, with a unique temperature dependence and a duration typical of phosphorescence. There was a recent surge of interest in TADF owing to its application in 3rd generation Organic Light-Emitting Diodes (OLEDs). In this presentation, the basis of TADF is presented, contrasting TADF in photoluminescence and TADF in electroluminescence. Two different types of TADF are identified: One-way and two-way TADF. It is shown that for a given efficiency, one-way TADF allows lower rates of reverse intersystem crossing. Graphical and quantitative indicators of singlet-triplet interconversion and photophysical efficiency are obtained and applied to the photoluminescence of several compounds and to the electroluminescence of TADF emitters specifically designed for OLEDs.Applications of TADF to temperature and oxygen sensing are also discussed.