ELFT HÍRADÓ

[ortvay AT achilles.elte.hu (Ortvay kollokvium)]

ELTE Fizika Intezet


                             ORTVAY KOLLOKVIUM

                    2006. oktober 26. , csutortok, 15 orakor
  Az ELTE Pazmany Peter s. 1/A alatti epuleteben a foldszinti 0.83 eloadoban

                                Serdar Sariciftci
                      (Johannes Kepler Univ. LIOS, Linz): 
                "All Organic "Plastic" Optoelectronic Devices" 

Kivonatos ismertetes:

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. 

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