Nanostructured inorganic/organic materials for photovoltaic applications

PHYS 498

Johanna P. Schmidtke, jpschmidtke@mail.utexas.edu and Paul F. Barbara, p.barbara@mail.utexas.edu. Department of Chemistry and Biochemistry, University of Texas at Austin, Mail Code A5500, Center for Nano- and Molecular Science and Technology, Austin, TX 78712
We have recently reported a new technique, single-molecule spectroelectrochemistry (SMS-EC), that enables the determination of electrochemical behavior one molecule at a time. Applied to devices based on conjugated polymers, SMS-EC offers the distribution of key electrochemical variables for molecules at heterogeneous organic/inorganic interfaces. Here we extend the use of these techniques to probe a new class of materials based on Cu(In,Ga)Se2 (CIGS), an absorber material for high efficiency thin film photovoltaic devices. The heterogeneous film/surface composition and promising device performance of CIGS-based materials make them excellent candidates for study by not only bulk ensemble electrochemical techniques, but also electrochemical probes at the single molecule level.
 

PHYS Poster Session - Nanostructured Materials and Nanophotonics
7:30 PM-10:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Hall A, Poster

Division of Physical Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008