title: Energy transfer dynamics of nanocrystal-polymer composites.
abstract: Steady-state and time-resolved photoluminescence spectroscopy are used to examine the photoluminescent properties of nanocrystal-polymer composites consisting of colloidal PbS nanocrystals blended with poly(2-methoxy-5(2-ethylhexyloxy)-p-phenylene vinylene). Quenching of the emission from the conjugated polymer due to the PbS nanocrystals is observed along with band edge emission from the ligand capped PbS nanocrystals. A decrease in the photoluminescence lifetime of MEH-PPV is also observed in the thin film nanocrystal-polymer composite materials. Photoluminescence excitation spectroscopy of the PbS nanocrystal emission from the composite shows features attributed to MEH-PPV providing evidence of a Förster transfer process.
authors.affiliation: Center for Biophotonics and Laser Science, Center for Quantum Computer Technology, School of Physical Sciences, The University of Queensland, Brisbane, QLD 4072, Australia. warner@physics.uq.edu.au
authors.forename: Jamie H
authors.initials: JH
authors.lastname: Warner
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Watt
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Thomsen
authors.forename: Norman
authors.initials: N
authors.lastname: Heckenberg
authors.forename: Paul
authors.initials: P
authors.lastname: Meredith
authors.forename: Halina
authors.initials: H
authors.lastname: Rubinsztein-Dunlop