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Updated: Jan 29, 2026

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
Published on: November 10, 2017
Effective Mn-Doping in AgInS₂/ZnS Core/Shell Nanocrystals for Dual Photoluminescent Peaks
Ryo Sakai1, Hikaru Onishi2, Satomi Ido2
1Department of Applied Chemistry, Faculty of Science, Tokyo University of Science (TUS), Tokyo 162-8601, Japan. 1317654@ed.tus.ac.jp.
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.
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