Photo-physics of organic semiconductors: from solar cells to explosives detectors

Paul

Dr. Paul Shaw, University of Queensland
This colloquium will be held at 1 pm, 17th August, in Parnell 07-222

Organic semiconductors promise to revolutionise the design and fabrication of everyday optoelectronic devices, which includes displays, lighting, solar cells, and sensors. A key aspect in the development of organic semiconductor technology is understanding the physical process that governs device operation. Time-resolved spectroscopy provides a window for exploring the physics of organic semiconductor materials by probing the excited state species that underpin device performance.

In this seminar, I will describe some of the main spectroscopic techniques used to probe the photo-physical properties of organic semiconductors and how they can be applied to study specific processes. I will focus on two topics from my research: charge generation in organic solar cells and fluorescence quenching in sensors for explosives. In each case, I will describe the implications of the results for future materials design and improvement of device performance.