Yellow-light generation and engineering in zinc-doped cadmium sulfide nanobelts with low-threshold two-photon excitation

Xiaoxu Wang, Jing Li, Qisong Li, Bingkun Chen, Guangli Song, Wensheng Zhang, Lijie Shi, Bingsuo Zou, Ruibin Liu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Through a simple doping route with zinc ion as a dopant in cadmium sulfide nanobelts, a bright yellow-colored light was obtained. The detailed chromaticity and brightness of the light can be engineered by the dopant concentration and the pumping power, which are used to control the dominant wavelength to any fine yellow color, and even cover the sodium-yellow-line of 589 nm. The nanobelts were synthesized through a chemical vapor deposition method. The peak shift of the XRD result proves that the zinc ions as a dopant exist in the nanobelts rather than in the ZnCdS alloy formation. Time-resolved photoluminescence of the nanobelt reveals the existence of the defect-related state, which induces a red band to further mix with green band-edge emission to form the yellow light. Moreover, low-threshold two-photon excitation was observed in the proper Zn-doped cadmium sulfide nanobelts. The dopant and pumping power-tuned generation and engineering of the yellow light makes it possible to use this kind of material as yellow light-emitting source.

Original languageEnglish
Article number325702
JournalNanotechnology
Volume25
Issue number32
DOIs
Publication statusPublished - 15 Aug 2014

Keywords

  • nanobelts
  • two-photon excitation
  • yellow-color light
  • zinc ions doped cadmium sulfide

Fingerprint

Dive into the research topics of 'Yellow-light generation and engineering in zinc-doped cadmium sulfide nanobelts with low-threshold two-photon excitation'. Together they form a unique fingerprint.

Cite this