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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 7 — Jul. 1, 2013
  • pp: 989–999

Size-dependent upconversion luminescence and quenching mechanism of LiYF4: Er3+/Yb3+ nanocrystals with oleate ligand adsorbed

Xiaojie Xue, Shinya Uechi, Rajanish N. Tiwari, Zhongchao Duan, Meisong Liao, Masamichi Yoshimura, Takenobu Suzuki, and Yasutake Ohishi  »View Author Affiliations

Optical Materials Express, Vol. 3, Issue 7, pp. 989-999 (2013)

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Er3+/Yb3+ co-doped LiYF4 nanocrystals were prepared by a facile solvothermal method. By adjusting the LiOH concentration, LiYF4 crystals with the size range from 16 nm to 2.0 μm were synthesized. Under the excitation by a 976 nm laser, upconversion quantum efficiency of the LiYF4: Er3+/Yb3+ samples were measured. It was observed that upconversion quantum efficiency tended to decrease with the reduction of particle size from microscale to nanoscale. A model was proposed to clarify the surface quenching mechanism influencing the size-dependent upconversion luminescence.

© 2013 OSA

OCIS Codes
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials

ToC Category:
Rare-Earth-Doped Materials

Original Manuscript: March 15, 2013
Revised Manuscript: June 17, 2013
Manuscript Accepted: June 25, 2013
Published: June 27, 2013

Xiaojie Xue, Shinya Uechi, Rajanish N. Tiwari, Zhongchao Duan, Meisong Liao, Masamichi Yoshimura, Takenobu Suzuki, and Yasutake Ohishi, "Size-dependent upconversion luminescence and quenching mechanism of LiYF4: Er3+/Yb3+ nanocrystals with oleate ligand adsorbed," Opt. Mater. Express 3, 989-999 (2013)

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