Insight into the synthesis and processing of narrow band gap organic semiconducting polymers for solar cell fabricationTitle to be confirmed

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

• SpeaGuillermo C. Bazan Department of Materials, University of California, Santa Barbara, CA 93106, USA;ker to be confirmed
• Friday 26 November 2010, 10:00-11:00
• Pippard Lecture Theatre, Cavendish Laboratory, Department of Physics.

If you have a question about this talk, please contact Leona Hope-Coles.

High charge separation efficiency combined with the reduced fabrication costs associated with solution processing (printing and coating) and the potential for implementation on flexible substrates make “plastic” solar cells a compelling option for tomorrow’s photovoltaics. The control the donor/acceptor morphology in bulk heterojunction materials as required for achieving high power conversion efficiency have is therefore of primary concern. We showed that by incorporating a few volume percent of high boiling point additive, the power conversion efficiency of photovoltaic cells (AM 1.5 conditions) is increased from 2.8% to 5.5%. Subsequent efforts centered on understanding the mechanism of action of the additives and this will be discussed in some detail . More recently, the improved synthesis of polymers has been studied, in particular those backbone systems that lead to aggregation in solution and high performance devices. We will present polymerization procedures that lead to high molecular weight product in short reaction times and involve simple purification protocols. Emerging structure/function relationships will be examined, as well as those polymer systems that allow fabrication of devices that have power conversion efficiencies approaching 6 %.

This talk is part of the Special Departmental Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Pippard Lecture Theatre, Cavendish Laboratory, Department of Physics
• School of Physical Sciences
• Special Departmental Seminars
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.