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Images of particles made from a promising battery cathode material called NMC

Upconverter-Enhanced Molecular Photovoltaics: Towards Cost-Effective, Broadband Solar Energy Conversion

2011
TomKat Center for Sustainable Energy

Jennifer Dionne and Michael McGehee, materials science and engineering

The conversion efficiency of such devices can be enhanced by adding upconverters, which combine below-bandgap photons to emit above-bandgap photons that can then be absorbed by the cell. An optimized upconverter could significantly boost the efficiency of next-generation molecular and polymeric solar cells, potentially nearing the Shockley-Queisser limit. The Stanford researchers will develop an efficient, inexpensive upconverting material and add that to dye-sensitized solar cells to prove their concept. They expect that the technology could be applied to other kinds of photovoltaic cells as well.