Enhancement of fluorescence in colloidal CuInS2 nanocrystals by introduction of crystal defect

Masato Uehara, Kosuke Watanabe, Yasuyuki Tajiri, Hiroyuki Nakamura, Hideaki Maeda

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


Cu-In-S nanocrystals were developed as a low toxic fluorescent. The stoichiometric CuInS2 nanocrystals were synthesized facilely by heating a solution of metal complexes. The fluorescence would be originated from the crystal defect. We intentionally introduced the crystal defects related to Cu deficiency in nanocrystal with the prospect that the fluorescence intensity would be increased. The nanocrystals have many defects without phase separation as observed in bulk material. Consequently, the fluorescence quantum yield achieved to c.a. 6%. Moreover, the fluorescence quantum yield was increased up to 15% by the ZnS-coating.

Original languageEnglish
Title of host publicationNanocrystalline Materials as Precursors for Complex Multifunctional Structures through Chemical Transformations and Self Assembly
PublisherMaterials Research Society
Number of pages5
ISBN (Print)9781615677849
Publication statusPublished - 2009
Event2009 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 14 2009Apr 17 2009

Publication series

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


Other2009 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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