Enhancing NIR emission of Yb3+ by silver nanoclusters in oxyfluoride glass

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Ronghua Ma
  • Jiangyun Qian
  • Shuo Cui
  • Xvsheng Qiao
  • Xianping Fan

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)222-225
Journal / PublicationJournal of Luminescence
Volume152
Online published22 Oct 2013
Publication statusPublished - Aug 2014

Abstract

Oxyfluoride glass comprising Yb3+ ions and Ag nanoclusters was prepared via a melt-quenching method. The molecule-like Ag clusters (ML-Ag) in the glass displayed broad absorption and emission bands in the ultraviolet (UV) and visible spectral regions, respectively. The luminescence quantum yield (QY) was determined to be higher than 90%. We observed energy transfer from ML-Ag nanoclusters to Yb3+ ions as evidenced by time resolved luminescence spectra, which resulted in a four-fold enhancement in NIR emission of Yb 3+. The luminescence enhancement effect described here would be applied to boost the efficiency of solar cells by converting high energy UV photons into NIR photons that better match the absorption of photovoltaic devices. © 2013 Elsevier B.V.

Research Area(s)

  • Ag clusters, Energy transfer, Luminescence, Oxyfluoride glass

Citation Format(s)

Enhancing NIR emission of Yb3+ by silver nanoclusters in oxyfluoride glass. / Ma, Ronghua; Qian, Jiangyun; Cui, Shuo et al.
In: Journal of Luminescence, Vol. 152, 08.2014, p. 222-225.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review