Abstract
Semiconductor nanocrystals have been a subject of increasing interest due to various unique physical properties. Besides the quantum confinement in all three dimensions, various trapping processes are important factors to understand the ultrafast carrier dynamics in nanocrystals. The trapping into the surface states has been suggested to be a possible deactivation channel for the fast carrier relaxation in band-edge photoluminescence. Moreover, it is reported that photodarkening due to two photon absorption has been observed by trapping electrons into the glass electronic states. In our experiment, femtosecond transient absorption of CdS/sub 0.4/Se/sub 0.6/ nanocrystals in a glass matrix (Schott Glass RG630) has been measured to study the trapping effect on the bleaching dynamics.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
