题 目: Exploring ionic migration in novel materials for photovoltaics and biosensors
报告人: Prof. Sven Huttner [University of Bayreuth, Germany]
时 间: Monday, February 18, 2019
地 点: 张江园区科研楼602房间 SSRF - Shanghai 602
主持人: Prof. Alessandro Sepe – Big Data Science Center - SSRF
This presentation will present different aspect of ionic interactions and migration in different contexts of organic and hybrid electronics together with structure investigating aspects.
Inorganic-organic halide organometal perovskites, such as CH3NH3PbI3 are an unprecedented rising star in the photovoltaic area since 2009, owing to its exceptionally high power conversion efficiencies reaching of more than 21% and simple fabrication process. Despite its relatively short history of development, intensive investigations have been concentrating on this material, ranging from crystal structure and photophysical characterization, to performance optimization and device integration, etc. This presentation will give an overview of the fundamental properties of these materials and focus on ion migration. First understanding the origins of ionic migration perovskites and the controlling and reducing it are key issues for their further potentially commercial application. We use a variety of optical and electrical experimental methods to explore this.
In conjugated polymer electronics Ionic migration and interaction may be rather useful in a complete different context. Functional polymers hold an astonishing potential for biosensors, flexible electronics and living cell interfaces. The field of organic bioelectronics is only at a very early stage. In metabolic reactions, ions are the most fundamental. We are currently studying the ionic interactions with conjugated polymers and respective functionalisations, exploring their feasibility for sensors. The second part of this presentation will give an outlook to this exciting and new field.
Biography of the Speaker
Since 2014 Juniorprofessor for Solar Energy - Hybrid and Organic Electronics,
2010 – 2013 Research Associate, Cavendish Laboratory, Optoelectronics Group
(Prof. Sir Richard Friend), University of Cambridge
2006 – 2009 PhD thesis with Prof. Ullrich Steiner (University of Cambridge)
and Prof. Mukundan Thelakkat (Universit？t Bayreuth)
2005 – 2006 Diploma Thesis with Prof. Georg Krausch (Physical Chemistry,
2000 – 2007 Diploma (Masters) in Physics (applied Physics)