Math-Sci Seminar

Speaker: Prof. Dr. Serdar Sarýçiftçi, Linzer Institut für organische Solarzellen (LIOS), Physikalische Chemie, 
Johannes Kepler Universität,  Linz, Austria

Title: All Organic “Plastic” Optoelectronic Devices

ATTENTION TO UNUSUAL DATE AND PLACE  

Date: Tue 19 Dec, 2006
Time: 16:45
Place: Science Building, Room Z24


Abstract:

Recent developments on conjugated polymer based photovoltaic diodes
(“plastic solar cells”) and photoactive organic field effect
transistors (photOFETs) are reviewed. The photophysics of such
photovoltaic devices is based on the photoinduced charge transfer
from donor type semiconducting conjugated polymers onto acceptor
type conjugated polymers or acceptor molecules such as
Buckminsterfullerene, C60. This photoinduced charge transfer is
reversible, ultrafast (within 40 femtoseconds) with a quantum
efficiency approaching unity, and the charge separated state is
metastable (up to milliseconds at 80K). Similar to the first steps
in natural photosynthesis, this photoinduced electron transfer leads
to a number of potentially interesting applications which include
sensitization of the photoconductivity and photovoltaic phenomena as
well as photoresponsive organic field effect transistors
(photOFETS). Examples of photovoltaic architectures are discussed
with their potential in terrestrial solar energy conversion.
Furthermore, organic polymeric/inorganic nanoparticle based “hybrid”
solar cells will be introduced and their potential discussed.

Please visit http://home.ku.edu.tr/~sci-math for a schedule of
upcoming Science -Math seminars at Koc University.