Ultraviolet and visible upconversion dynamics in Er3+:YAlO3 under 2H11/2 excitation

doi:10.1088/1009-1963/15/6/023

Abstract

Abstract The luminescence of Er$^{3+}$:YAlO$_{3}$ in ultraviolet, visible and infrared ranges under the 518 nm excitation of the multiples $^{2}$H$_{11 / 2}$ have been investigated. Ultraviolet (275 nm and 318 nm), violet (405 nm and 413 nm) and blue (474 nm) upconversion and infrared downconversion luminescence has been observed. By means of measuring the fluorescence decay curves and using the theory of rate equations, the luminescence kinetics was studied in detail and the processes of energy transfer upconversion (ETU) and excitation state absorption (ESA) were proposed to explain the upconversion phenomena.

Keywords: ultraviolet upconversion dynamics Er$^{3 +}$:YAlO₃

Received: 22 July 2005
Revised: 03 September 2005
Accepted manuscript online:

PACS:	32.30.Jc	(Visible and ultraviolet spectra)
	32.50.+d	(Fluorescence, phosphorescence (including quenching))
	32.70.Cs	(Oscillator strengths, lifetimes, transition moments)
	32.80.Rm	(Multiphoton ionization and excitation to highly excited states)

Fund: Project supported by the National Natural Science Foundation of China (Grant No 10074020).

Cite this article:

Yang Hai-Gui (杨海贵), Dai Zhen-Wen (戴振文), Sun Zhi-Wei (孙志伟) Ultraviolet and visible upconversion dynamics in Er³⁺:YAlO₃ under ²H_11/2 excitation 2006 Chinese Physics 15 1273

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Ultraviolet and visible upconversion dynamics in Er3+:YAlO3 under 2H11/2 excitation

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Ultraviolet and visible upconversion dynamics in Er³⁺:YAlO₃ under ²H_11/2 excitation