Size dependence of carrier dynamics and carrier multiplication in PbS quantum dots

Gero Nootz,1,2 Lazaro A. Padilha,1 Larissa Levina,3 Vlad Sukhovatkin,3 Scott Webster,1 Lukasz Brzozowski,3 Edward H. Sargent,3 David J. Hagan,1,2,* and Eric W. Van Stryland1,2,† 1CREOL: The College of Optics and Photonics, University of Central Florida, 4000 Central Florida Blvd., Orlando, Florida, 32816, USA 2Physics Department, University of Central Florida, 4000 Central Florida Blvd., Orlando, Florida, 32816, USA 3The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada, M5S3G4 (Received 26 October 2010; revised manuscript received 17 February 2011; published 5 April 2011)