Growth Processes of LuF3 Upconversion Nanoflakes with the Assistance of Amorphous Nanoclusters

Ting Wang, Yue Lin, Wei Lu, Xuyun Guo, Jianbei Qiu, Xue Yu, Qiuqiang Zhan, Siu Fung Yu, Xuhui Xu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Improvement of the facile synthesis strategy is an effective way to tune the optical properties of lanthanide-doped upconversion nanoparticles. However, it is necessary to directly study the growth process to control the formation structure of the nanoparticles. Here, we propose to use the in situ TEM imaging technique to observe the growth kinetics of LuF3 upconversion nanoflakes. It is discovered that the suppression of surface amorphous clusters, which act as the quenching centers, during the flake-to-flake growth process of nanoflakes can significantly improve the upconversion efficiency. Therefore, by controlling the concentration of amorphous nanoclusters in the precursor solution, we can manipulate the morphology and fabricate LuF3 nanoflakes with maximized upconversion emission intensity.

Original languageEnglish
Pages (from-to)5254-5259
Number of pages6
JournalACS Applied Nano Materials
Issue number8
Publication statusPublished - 23 Aug 2019


  • amorphous nanoclusters
  • in situ TEM imaging
  • LuF nanoflakes
  • upconversion

ASJC Scopus subject areas

  • General Materials Science


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