High-Performance Quantum Dots with Synergistic Doping and Oxide Shell Protection Synthesized by Cation Exchange Conversion of Ternary-Composition Nanoparticles

Qiumei Di, Xiyue Zhu, Jia Liu, Xiaobin Zhang, Huishan Shang, Wenxing Chen, Jiajia Liu, Hongpan Rong, Meng Xu, Jiatao Zhang

研究成果査読

12 被引用数 (Scopus)

抄録

The insertion of cation impurities into quantum dots (QDs) as a dopant has been proved to be an efficient way to tailor their optical, electronic, and magnetic properties; however, the low quantum yield (QY) and poor photostability strongly limit their further applications. We report a strategy to coat a thin oxide shell around the heterovalent doped QDs to enhance their QYs and photostabilities simultaneously. In the case of Ag+-doped CdS QDs, the controlled cation exchange reaction between Cd2+ and ternary Ag3SbS3 nanoparticles not only realizes the Ag+ doping in CdS QDs but also generates a thin Sb2O3 shell around the surface of the QDs. Enabled by such, as-prepared CdS:Ag@Sb2O3 QDs exhibited enhanced photostability and high QY of 66.5%. We envision that the findings presented here will inspire more novel protocols for advancing the practical applications of doped QDs.

本文言語English
ページ(範囲)2606-2615
ページ数10
ジャーナルJournal of Physical Chemistry Letters
10
10
DOI
出版ステータスPublished - 2019 5 16
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 物理化学および理論化学

フィンガープリント

「High-Performance Quantum Dots with Synergistic Doping and Oxide Shell Protection Synthesized by Cation Exchange Conversion of Ternary-Composition Nanoparticles」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル