“…Recently, exciting reports such as the observation of superb multiple-exciton generation efficiencies (Sargent, 2009;Sukhovatkin et al, 2009), highly-efficient hot-electron injection (Tisdale et al, 2010), and cold-exciton recycling (Klar et al, 2009), have propelled nanocrystalline lead-chalcogenide film structures to the forefront of cutting-edge research (M. S. Kang et al, 2009;W. Ma et al, 2009;Sambur et al, 2010;Steckel et al, 2003).…”