Photoluminescence Properties of Mn2+‐Doped CdS/ZnS Core/Shell Nanocrystals with Controlled Concentration and Doping Position
Year: 2025
Type: article
Abstract: This study investigates the photoluminescence (PL) properties of Mn2+‐doped CdS/ZnS core/shell nanocrystals, focusing on the effects of Mn2+ concentration and doping position on energy transfer dynamics. A fast decay component in the PL decay profiles, attributed to energy transfer from the CdS core to Mn2+ ions, is observed and characterized by a single‐exponential function with a lifetime of ≈10–20 ns. The results show that increasing Mn2+ concentration leads to a decrease in the PL intensity of CdS excitons and a corresponding enhancement of Mn2+ emission. Additionally, the energy transfer efficiency is found to decrease as the Mn2+ ions are positioned further from the CdS core, highlighting the importance of the doping position. These findings provide deeper insights into nanosecond‐scale energy transfer dynamics and emphasize the significance of optimizing both dopant concentration and position to tailor the optical properties of nanomaterials.
Source: physica status solidi (b)
Authors: Yusuke Yanagisawa, Marino Takayama, Atsushi Yamashita
Institution: Nara Institute of Science and Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4407611062