The pioneer of organic semiconductor electronics will be a guest speaker at Helmholtz-Zentrum Berlin

Prof. Sir Richard Friend will give a talk at HZB ( © Patrik Tschudin, CC BY 2.0,

On 14 June, Prof. Sir Richard Friend will be giving a talk in the auditorium of BESSY II on the physics that made the breakthroughs in organic electronics possible. He will speak about the "Management of the Coulomb interaction in organic LEDs and solar cells".

He is one of the most renowned researchers in the field of organic semiconductor physics: Prof. Sir Richard Friend of the University of Cambridge. Organic semiconductors are in high demand, given that they can be affordably printed over large surface areas. They are already being used, among other things, in smartphone displays, as photovoltaic diodes and as field effect transistors (FETs). Prof. Sir Richard Friend will be giving a talk about the physics that led to these breakthroughs in organic semiconductor technology at the Photovoltaic Colloquium at HZB on the 14th of June 2018.

The physics of organic semiconductors is largely controlled by electron-hole Coulomb interactions and by spin exchange energies. In his talk, Friend will explain these effects and will demonstrate how they can be used targetedly in the design of electronic components. 

Prof. Sir Richard Friend is a pioneer in the field of polymer semiconductors and has co-founded several companies. His research group was the first to demonstrate the efficient operation of field effect transistors and light emitting diodes made of polymers. Sir Richard Friend holds the Cavendish Professorship of Physics at the University of Cambridge, and is Director of the Winton Programme for the Physics of Sustainability and of the Maxwell Centre.

When:  14 June 2018, at 10.15 a.m.

Where: in the BESSY auditorium, Albert-Einstein-Str. 15, 12489 Berlin

Entrance is free and registration is not required.



Management of the Coulomb interaction in organic LEDs and solar cells

π-conjugated organic molecules and polymers now provide a set of well-performing semiconductors that support devices, including light-emitting diodes (LEDs) as used in smart-phone displays and lighting, field-effect transistors (FETs) and photovoltaic diodes (PVs).  These are attractive materials to manufacture, particularly for large-area applications where they can be processed by direct printing, so that the cost of materials and processing can be very low.   This practical success is made possible by breakthroughs in the understanding and engineering of the underlying semiconductor science.  The physics of organic semiconductors is often controlled by large electron-hole Coulomb interactions and by large spin exchange energies.  I will demonstrate how this can be used to engineer device operation.