Tunable emission properties of CdSe/CdS quantum dots by Ce doping

Jeong, Wonwoo, Hui, Kwan San, Hui, Kwun Nam, Cho, Young Rae and Cho, Kyung Mox (2017) Tunable emission properties of CdSe/CdS quantum dots by Ce doping. Journal of Materials Science: Materials in Electronics, 28 (22). 17331–17337. ISSN 0957-4522

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Abstract

A facile one-step hydrothermal synthesis to prepare cerium (Ce3+) ion doped CdSe/CdS core/shell quantum dots (QDs) is introduced. The effect of Ce3+ ion doping on structural and optical properties of the CdSe/CdS core/shell QDs is comprehensively investigated. With increasing Ce doping concentration, a linear increase in the lattice parameter is observed, suggesting the successful coupling of Ce3+ ions to the CdSe/CdS QDs. X-ray photoelectron spectroscopy reveals strong peaks of the Ce3+ state, indicating that Ce is initially present mainly in the Ce3+ ion state. In addition, red-shift over the range 538–569 nm is observed in the photoluminescence (PL) spectra of Ce3+ ion doped CdSe/CdS QDs. Results clearly indicates that the PL peak positions of the CdSe/CdS QDs could be controlled by the Ce content. This study highlights a new approach to tune the emission of the QDs.

Item Type: Article
Faculty \ School: Faculty of Science > School of Mathematics
Related URLs:
Depositing User: Pure Connector
Date Deposited: 23 Sep 2017 05:08
Last Modified: 11 Jun 2020 00:35
URI: https://ueaeprints.uea.ac.uk/id/eprint/64953
DOI: 10.1007/s10854-017-7665-0

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