Plasmon-Enhanced Blue Upconversion Luminescence by Indium Nanocrystals

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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  • Lingxiao Wang
  • Shuangli Guo
  • Dongmei Liu
  • Jijun He
  • Jie Zhou
  • Kun Zhang
  • Yang Wei
  • Yue Pan
  • Chao Gao
  • Ze Yuan
  • Xiaoji Xie
  • Ling Huang


Original languageEnglish
Article number1901242
Journal / PublicationAdvanced Functional Materials
Issue number29
Online published22 May 2019
Publication statusPublished - 18 Jul 2019


Numerous endeavors have been undertaken to gain enhanced upconversion luminescence via surface plasmon resonance (SPR) generated by specially designed nanostructures of noble metals (e.g., Au, Ag). However, the SPR response of these metals is usually weak in the ultraviolet (UV) region because of their intrinsic electronic configurations; thus, only green and red upconversion emissions can undergo significant plasmonic enhancement yet without selectivity, while an efficient approach to selectively enhancing the blue upconversion luminescence has been lacking. Herein, by integrating the pronounced UV SPR of silica-coated indium nanocrystals (InNCs) with blue-emission upconversion nanoparticles (UCNPs) of NaYbF4:Tm, an up to tenfold selective luminescence enhancement at 450 nm is obtained upon 980 nm laser excitation. Precise manipulation of the silica shell thickness suggests an optimal working distance of 3 nm between InNCs and UCNPs. This study has, for the first time, realized selective blue upconversion luminescence enhancement by using an inexpensive, non-noble metal material, which will not only enrich the fundamental investigations of SPR-enhanced upconversion emission, but also widen the applications of blue light-emitting nanomaterials, for example, in therapeutics.

Research Area(s)

  • blue emission, indium nanocrystals, plasmonic enhancement, ultraviolet surface plasmon, upconversion luminescence

Citation Format(s)

Plasmon-Enhanced Blue Upconversion Luminescence by Indium Nanocrystals. / Wang, Lingxiao; Guo, Shuangli; Liu, Dongmei; He, Jijun; Zhou, Jie; Zhang, Kun; Wei, Yang; Pan, Yue; Gao, Chao; Yuan, Ze; Lei, Dangyuan; Xie, Xiaoji; Huang, Ling.

In: Advanced Functional Materials, Vol. 29, No. 29, 1901242, 18.07.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal