Crystallization and Structure Formation in Donor-Acceptor Block Copolymers for Applications in Organic Photovoltaics

Add to your list(s) Download to your calendar using vCal

• Professor Thomas Thurn-Albrecht, Martin Luther Unversity, Halle-Wittenberg, Germany
• Friday 18 November 2011, 14:00-15:00
• Pippard Lecture Theatre, Cavendish Laboratory.

If you have a question about this talk, please contact Tracy Inman.

Polymer solar cells require a nanoscale structure of donor and acceptor materials in order to achieve efficient charge separation. This is often realized in quenched phase separated blend systems. The exact adjustment of the morphology in this case is an empirical process and the resulting two-phase structure corresponds thermodynamically to a non-equilibrium state. We explore the possibility to use the self-assembly of block copolymers comprising materials that are good electron and hole conductors to generate thermodynamically stable, nanoscale donor and acceptor domains on the scale of the exciton diffusion length. While some initial devices have been fabricated, detailed understanding of the complex process of structure formation processes in such materials is often lacking. We present a detailed structural study on a donor-acceptor block copolymer and related model materials, using small and wide angle x-ray scattering in combination with AFM . We discuss similarities and differences with many common block copolymers undergoing a liquid-liquid microphase separation.

This talk is part of the BSS Formal Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• BSS Formal Seminars
• Biology
• CamBridgeSens
• Cambridge talks
• Centre for Health Leadership and Enterprise
• Dobson Group - General Interest
• Featured lists
• Life Science Interface Seminars
• Life Sciences
• Life Sciences
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Pippard Lecture Theatre, Cavendish Laboratory
• School of Physical Sciences
• Thin Film Magnetic Talks
• Trust & Technology Initiative - interesting events
• my_list
• other talks

Note that ex-directory lists are not shown.