Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Enhanced upconversion of NaYF4:Er3+/Yb3+ phosphors prepared via the rapid microwave-assisted hydrothermal route at low temperature: phase and morphology control

Not Accessible

Your library or personal account may give you access

Abstract

Monophasic NaYF4:Er3+/Yb3+ crystals were synthesized via the microwave-assisted hydrothermal route at 180°C. Microwave heating during the hydrothermal process substantially reduces the duration of reaction for the formation of cubic-NaYF4:Er3+/Yb3+ nanocrystals from 6 h to 30 min. As the duration of the reaction increases, cubic-NaYF4:Er3+/Yb3+ nanocrystals are transformed to uniform hexagonal-NaYF4:Er3+/Yb3+ microprisms because of the enhanced reaction kinetics. Bright upconverted emission from the NaYF4:Er3+/Yb3+ crystal, obtained by the efficient two-photon excitation, is related to crystal structure and morphology. The hexagonal microprisms exhibit better upconversion and are employed in security applications.

© 2016 Optical Society of America

Full Article  |  PDF Article

Corrections

20 June 2017: A typographical correction was made to the author affiliations.


More Like This
Effect of EDTA on the formation and upconversion of NaYF4:Yb3+/ Er3+

Ruisen Zhou and Xia Li
Opt. Mater. Express 6(4) 1313-1320 (2016)

Ion-redistribution induced efficient upconversion in β-NaYF4:20%Yb3+,2%Er3+ microcrystals with well controlled morphology and size

Shaohua Fan, Shikai Wang, Lu Yu, Hongtao Sun, Guojun Gao, and Lili Hu
Opt. Express 25(1) 180-190 (2017)

Wide-range ratiometric upconversion luminescence thermometry based on non-thermally coupled levels of Er in high-temperature cubic phase NaYF4: Yb, Er

Raheel Ahmed Janjua, Umer Farooq, Rucheng Dai, Zhongping Wang, and Zengming Zhang
Opt. Lett. 44(19) 4678-4681 (2019)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved