Ashwin C. Atre
Ph. D. Candidate
Materials Science & Engineering
B.S.E., Chemical Engineering, Princeton University (2009)
I am investigating the process of upconversion as a method for reducing transmission losses in photovoltaics and photocatalysts. By combining the energy contained in two low-energy photons and emitting a higher-energy photon, upconversion has great potential for improving solar cell efficiencies. I am currently focusing on a bimolecular upconverter system that, when combined with a carefully designed plasmonic nanoparticle system, will operate efficiently with low power non-coherent solar illumination.
I am also exploring plasmonic nanoparticle-based metamaterials that display interesting optical properties, such as a negative refractive index, not possible with materials found in nature.
H. Alaeian,* A. Atre,* A. Garcia, and J. Dionne, "Nanostructured solar cells: optimized light absorption in Si wire arrays with plasmon-enhanced upconversion," submitted (*equal-author contributors)
A. Atre and J. Dionne, "Realistic upconverter-enhanced solar cells with non-ideal absorption and recombination efficiencies," in press, Journal of Applied Physics (2011)