A funnel like band gap profile is realized in a layer-by-layer assembled structure of CdTe nanocrystals. Recycling of trapped excitons leads to efficient energy transfer along the band gap gradient.
© 2005 Optical Society of America
T. Franzl, T. A. Klar, S. Schietinger, A. L. Rogach, and J. Feldmann, "Exciton Recycling in Graded Gap Layer-by-Layer Semiconductor Nanocrystal Structures," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2005), paper CFE7.
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