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Emission of Precipitation Deposited PbS Quantum Dots on Polyethylene Terephthalate

  • Bruno Ullrich (a1), Andrew R. Markelonis (a1), Joanna S. Wang (a1) and Gail J. Brown (a1)

Centrifuge enforced precipitation was used to disperse PbS quantum dots (diameter 4.7 nm) on polyethylene terephthalate. By employing double frequency Fourier transform spectroscopy, we studied the emission properties of the sample. Gaussian shaped emission spectra from cryogenic temperatures up to room temperatures were observed, demonstrating the potential of PbS quantum dots to be used as light emitters in combination with organic matrices. One interesting feature is that the linewidth of the emission spectrum does not follow the expected thermal broadening.

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