Exciton-Exciton Interaction and Optical Gain in Colloidal CdSe/CdS Dot/Rod Nanocrystals
SABA, MICHELE;QUOCHI, FRANCESCO;MARCEDDU, MARCO;MURA, ANTONIO ANDREA;BONGIOVANNI, GIOVANNI LUIGI CARLO
2009-01-01
Abstract
Exciton-exciton interaction in dot/rod CdSe/CdS nanocrystals has proved to be very sensitive to the shape of nanocrystals, due to the unique band alignment between CdSe and CdS. Repulsive exciton-exciton interaction is demonstrated, which makes CdSe/CdS dot/rods promising gain media for solution-processable lasers, with projected pump threshold densities below 1 kW cm(-2) for continuous wave lasing.Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.