Colloidal Double Quantum Dots

• DOI: 10.1021/acs.accounts.5b00554
• Publication Date: 2016-04-23T12:01:42Z
• Authors: Ayelet Teitelboim; Noga Meir; Miri Kazes; Dan Oron
• Keywords: 02 engineering and technology; 0210 nano-technology

Pairs of coupled quantum dots with controlled coupling between the two potential wells serve as an extremely rich system, exhibiting a plethora optical phenomena that do not exist in each isolated constituent dots. Over past decade, systems have been under extensive study context epitaxially grown (QDs), but only handful examples reported colloidal QDs. This is mostly due to difficulties controllably growing nanoparticles encapsulate within them separated by energetic barrier via synthesis methods. Recent advances methods enabled first clear demonstrations double and allowed for exploratory studies into their properties. Nevertheless, QDs can offer extended level structural manipulation allows broader range materials be used compared counterparts also more complex control over mechanisms strength spatially The photophysics these nanostructures governed balance mechanisms. dipole-dipole interactions components, leading energy transfer them. second associated overlap excited carrier wave functions, charge multicarrier components. magnitude subcomponents determined detailed landscape nanocrystals (NCs). One hallmarks observation dual-color emission from single nanoparticle, which spectroscopy properties down particle level. Furthermore, rational design subsystems enables one tune statistics photon classical emission. Dual provides NCs advanced functionalities than ability better tailor spectrum advantageous color designed LEDs lighting display applications. different response colors external stimuli ratiometric sensing. Control hot dynamics such structures photoluminescence upconversion. Account description main hurdles toward overview library synthetic pathways constructing discoveries regarding photophysical are then described detail, followed applications taking advantage double-dot structure. Finally, perspective outlook future development provided.