One-pot synthesis of color-tunable copper doped zinc sulfide quantum dots for solid-state lighting devices

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Lifang He
  • Lei Yang
  • Bin Liu
  • Jian Zhang
  • Cheng Zhang
  • Shengjun Liu
  • Khalid A. Alamry
  • Abdullah M. Asiri
  • Kui Zhang
  • Suhua Wang

Detail(s)

Original languageEnglish
Pages (from-to)537-542
Journal / PublicationJournal of Alloys and Compounds
Volume787
Early online date12 Feb 2019
Publication statusPublished - 30 May 2019

Abstract

Color-tunable semiconductor quantum dots (QDs) are highly attractive for a wide range of applications including imaging, sensing, and lighting. Herein, we reported a facile synthesis of copper-doped zinc sulfide quantum dots (ZnS:Cu QDs) with tunable emission colors, using a microwave-assisted one-pot reaction. 3-mercaptopropionic acid (MPA) was used as a stabilizer agent and sulfide source for the formation of ZnS:Cu QDs. The photoluminescence of ZnS:Cu QDs showed a clear red-shift as increasing Cu concentration, which can be controlled by microwave irradiation time. As increasing the irradiation time, the emission color (peak) of ZnS:Cu QDs changed from blue (500 nm) to green (540 nm), yellow (580 nm), and to orange-red (595 nm). The obtained ZnS:Cu QDs were highly luminescent, as evidenced by their high quantum yields. The potential utility of ZnS:Cu QDs as a novel lighting source was demonstrated in a near-UV chip-based white light-emitting diode.

Research Area(s)

  • Copper dopants, Light emitting diode, Microwave, Photoluminescence, Quantum dots, Zinc sulfide

Citation Format(s)

One-pot synthesis of color-tunable copper doped zinc sulfide quantum dots for solid-state lighting devices. / He, Lifang; Yang, Lei; Liu, Bin; Zhang, Jian; Zhang, Cheng; Liu, Shengjun; Chen, Shengmei; Zapien, Juan Antonio; Alamry, Khalid A.; Asiri, Abdullah M.; Zhang, Kui; Wang, Suhua.

In: Journal of Alloys and Compounds, Vol. 787, 30.05.2019, p. 537-542.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review