1. Critical interfaces in new solar cell materials: organic heterojunctions and heterojunctions involving semiconductor nanoparticles
- Author
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Dana M. Alloway, R. Clayton Shallcross, Neal R. Armstrong, Amy L. Graham, P. Alex Veneman, Weining Wang, Diogenes Placencia, and Michael T. Brumbach
- Subjects
Materials science ,Organic solar cell ,Photoemission spectroscopy ,business.industry ,Nanoparticle ,Heterojunction ,law.invention ,Semiconductor ,X-ray photoelectron spectroscopy ,law ,Photovoltaics ,Solar cell ,Optoelectronics ,business - Abstract
The heterojunctions formed between different organic dyes (O/O' heterojunctions), organic dyes with contacting oxide or metal electrodes (O/I heterojunctions), and semiconductor nanoparticles with organic host polymers and ligands (SC-NP/ O heterojunctions) must be understood and optimized in order to enhance the energy conversion efficiencies of photovoltaics using these materials as their active components. We have used combinations of UV-photoelectron spectroscopy, and X-ray photoelectron spectroscopy (UPS/XPS) in the characterization of representative heterojunctions, and extrapolate these studies to the optimization of new photovoltaic and photoelectrochemical energy conversion devices.
- Published
- 2008
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