Host sensitized near-infrared emission in Nd3+-Yb3+ Co-doped Na2GdMg2V3O12 phosphor

Dan Song, Chongfeng Guo*, Jin Zhao, Hao Suo, Xiaoqi Zhao, Xianju Zhou, Guozhen Liu

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Yb3+/Nd3+ singly and co-doped Na2GdMg2V3O12 phosphors with near-infrared (NIR) emission were synthesized via sol-gel method. The phase purity and structure of samples were characterized by X-ray diffraction (XRD), the photoluminescence emission (PL) and excitation (PLE) spectra along with decay curves were also measured. Near infrared (NIR) emissions (850–1150 nm) from acceptors Yb3+ or Nd3+ matching well with the response curve of the silicon solar cell were obtained, in which VO4 3− groups acted as sensitizers by capturing near ultraviolet photons which are not absorbed efficiently by silicon solar cell and transferred them to Yb3+/Nd3+ by energy transfer processes. The NIR emission intensities of the Nd3+-Yb3+co-doped samples Na2GdMg2V3O12 were enhanced greatly in comparison with that of Nd3+/Yb3+ singly doped samples, and the possible energy transfer processes were also discussed in detail. Results indicate that the obtained samples are potential solar spectral down-conversion (DC) convertors to enhance the conversion efficiency of the silicon solar cells.

Original languageEnglish
Pages (from-to)12988-12994
Number of pages7
JournalCeramics International
Volume42
Issue number11
DOIs
Publication statusPublished - 15 Aug 2016

Keywords

  • Energy transfer
  • Near-infrared
  • Phosphor
  • Vanadate garnet

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