Synthesis of Cu-In-S fluorescent nanocrystals

Kosuke Watanabe, Masato Uehara, Hiroyuki Nakamura, Hideaki Maeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


CuInS2 (CIS) fluorescent nanocrystals (NCs) were obtained by heating an organic metal complex. The photoluminescence (PL) originated from the donor-acceptor, and the quantum yield (QY) was achieved at 6%. Furthermore, we doped some metal ions (Zn2+, Cd2+ or Ag+) by the post heat-treatment in the organic coordinating solvent in order to tune the band gap of NCs. By this post treatment, the alteration of NCs structure was suggested, such as changing into an alloying and composite structure. In Zn-doping, the PL wavelength was widely tuned from 535 to 650 nm by alloying between CIS and ZnS. Moreover, PL intensity was increased with these structure alterations. In particular, the materials doped with Zn or Cd achieved respective QY of 25% and 40%.

Original languageEnglish
Title of host publicationQuantum-Dot and Nanoparticle Bioconjugates-Tools for Sensing and Biomedical Imaging
Number of pages6
Publication statusPublished - 2008
Event2007 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 26 2007Nov 30 2007

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2007 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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