Abstract
We report in this paper the growth of PbS shells over colloidal PbSe nanocrystal quantumdots (NQDs) with monolayer-precision. The technique of successive ion layeradsorption and reaction (SILAR) has been adapted to the growth of high-qualitycore–shell nanocrystals. The core–shell infrared NQDs were ligand-exchanged withshort-chain octylamine, and the photoluminescence efficiency of the surface-engineeredcore–shell nanoparticles was substantially higher than that of the plain core structuresundergoing the same surface processing, which reveals less ligand dependence andenhanced chemical robustness in the core–shell NQDs. The reported results openup the possibility of incorporating semiconductor infrared NQDs in the siliconmatrix to develop all-inorganic light-emitting heterojunctions on silicon substrates.
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.
