Ultrafast insights into full-colour light-emitting C-Dots
Nandan Ghorai, Soumyadip Bhunia, Subham Burai, Hirendra N. Ghosh, Pradipta Purkayastha, Somen Mondal
Abstract
successfully investigating the carrier dynamics of their core and surface state with a myriad use of steady-state, time-resolved photoluminescence, and ultrafast transient absorbance spectroscopy techniques. The ultrafast charge-carrier dynamics of the core and surface state clearly indicated that the graphitic nitrogen in the core state and the oxygen-containing functional group in the surface state predominately contribute to controlling their wide range of emission properties. We believe that these findings will give the C-Dots their own designation in the fluorophore world and create a new avenue for designing and developing C-Dot-based new architectures.