Highly Efficient Multiple Exciton Generation in Colloidal PbSe and PbS Quantum Dots Ellingson, Randy J. ; Beard, Matthew C. ; Johnson, Justin C. ; Yu, Pingrong ; Micic, Olga I. ; Nozik, Arthur J. ; Shabaev, Andrew ; Efros, Alexander L. Abstract Publication: Nano Letters Pub Date: May 2005 DOI: 10.1021/nl0502672 Bibcode: 2005NanoL...5..865E