Work

Upconversion emissions from high-energy states of Eu^3+ sensitized by Yb^3+ and Ho^3+ in β-NaYF_4 microcrystals under 980 nm excitation

Year: 2011

Type: article

Abstract: Under 980 nm excitation, multiple ultraviolet and visible upconversion luminescence from Ho3+ and Eu3+ ions were observed in Yb3+/Ho3+/Eu3+ tri-doped NaYF4 microcrystals (MCs). The high-energy states (5H3-7, 5L6, 5D3 and 5D2) of Eu3+ ions could be efficiently populated by two-step energy transfer (ET) processes of Yb → Ho → Eu. Four-, three-, two-photon UC processes of Eu3+ ions were confirmed by the dependence of 5H3-7, 5L6 and 5D0 levels emission intensities on the pumping power.

Source: Optics Express

DOI: 10.1364/oe.19.025471

Authors: Lili Wang, Zhenyu Liu, Zhe Chen, Dan Zhao, Guanshi Qin, Weiping Qin

Institutions: Changchun University of Technology, Jilin University, State Key Laboratory on Integrated Optoelectronics

Language: English

Topic: Luminescence Properties of Advanced Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

OpenAlex ID: W2033036202

FWCI: 0.47

Cites: 17

Cited by: 39

Related to: 10