Organic semiconductors are of growing importance as optoelectronic materials with a wide range of applications including displays, lighting, solar cells, lasers and sensing. This talk will introduce the materials and give a brief overview of work in these fields at the Organic Semiconductor Centre. It will then focus on two key aspects of organic solar cell materials and devices: the measurement of exciton diffusion, and the measurement of charge transport. Exciton diffusion is relatively little studied, due in part to a lack of well-established reliable measurement techniques for it. The talk will describe our work to address this issue by developing a range of ways of using time-resolved fluorescence to measure exciton diffusion. Charge transport is also a very important aspect of the development of organic solar cell materials, and can be measured by the time-of-flight technique. Results comparing charge mobility in one and two-dimensional molecular structures, together with a novel solution-processed Ge-cruciform solar cell material will be presented.
Les personnes ne possédant pas de badge CEA doivent contacter Béatrice Motte (04 38 78 47 78) pour obtenr un avis de rendez-vous.
People who do not have a CEA badge should contact Béatrice Motte (04 38 78 47 78) to obtain a notice of appointment.