Developing PbSe/PbS core-shell nanocrystals quantum dots (NQDs) for NQD/silicon heterojunctions

Jian Xu, Cui Dehu, Xu Shengyong, Gary Paradee, Zhang Fan, Zhu Ting

Research output: Contribution to conferencePaper

Abstract

We report in this paper the epitaxial growth of PbS shells over PbSe nanocrystal quantum dots (NQDs) with monolayer-precision. The core-shell infrared NQDs were ligand-exchanged with short-chain octadmine, and the photoluminescence efficiency of the surface-engineered core-shell nanoparticles was substantially higher than that of the plain core structures undergoing the same surface processing, which reveals less ligand-dependence and enhanced chemical robustness in the core-shell NQDs. The reported results could potentially open up the possibility of incorporating semiconductor infrared NQDs in the silicon matrix to develop all-inorganic light emitting heterojunctions on silicon substrates.

Original languageEnglish (US)
Pages113-116
Number of pages4
StatePublished - Dec 8 2006
Event2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings - Boston, MA, United States
Duration: May 7 2006May 11 2006

Other

Other2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings
CountryUnited States
CityBoston, MA
Period5/7/065/11/06

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Developing PbSe/PbS core-shell nanocrystals quantum dots (NQDs) for NQD/silicon heterojunctions'. Together they form a unique fingerprint.

  • Cite this

    Xu, J., Dehu, C., Shengyong, X., Paradee, G., Fan, Z., & Ting, Z. (2006). Developing PbSe/PbS core-shell nanocrystals quantum dots (NQDs) for NQD/silicon heterojunctions. 113-116. Paper presented at 2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings, Boston, MA, United States.