Effective mn-doping in agins2/zns core/shell nanocrystals for dual photoluminescent peaks

Ryo Sakai, Hikaru Onishi, Satomi Ido, Seiichi Furumi

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Abstract

We developed the effective Mn-doping procedure for AgInS2(AIS)/ZnS core/shell nanocrystals (NCs) to exhibit dual photoluminescence (PL) peaks. Although the AIS/ZnS core/shell NCs showed solely a single PL peak at ~530 nm, incorporation of a small amount of Mn as a dopant within the AIS/ZnS NCs resulted in the simultaneous emergence of dual PL peaks at ~500 nm (green PL) arising from AIS/ZnS NCs and ~600 nm (orange PL) from the Mn dopants. Furthermore, we succeeded in significantly increasing the absolute PL quantum yield value of dual emissive AIS/ZnS NCs incorporated with Mn dopants from 10% to 34% after surface passivation with another ZnS shell for the formation of core/shell/shell structures.

Original languageEnglish
Article number263
JournalNanomaterials
Volume9
Issue number2
DOIs
Publication statusPublished - Feb 2019

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Keywords

  • Dopant
  • Manganese
  • Nanocrystals
  • Photoluminescence
  • Semiconductor
  • Silver indium sulfide

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