There are large number of factors that limit the overall performance of an organic photovoltaic (OPV) device and a photocatalytic system for renewable energy conversion. We present the use of single molecule/particle spectroscopic (SMS/SPS) techniques to study the charge transfer between CdSe/ZnS core/shell quantum dots and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) molecules on TiO2. Also shown are spectroelectrochemical experiments on highly fluorescent, Surface-Enhance Raman (SERS) active Ag nanoparticles and their photoreduction activities on single crystal TiO2 surface to reveal the heterogeneities in local photoelectrochemical activities of small nanostructures that play a major role in forming solar cell and water splitting for hydrogen generation.

Single molecule/nanoparticle apectroelectrochemistry for understanding interfacial charge transfer dynamics and renewable energy conversion at namometer scale

244th National Meeting (2012)

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