Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2012-12-01

Green upconversion emission in Nd³⁺-Yb³⁺-Zn²⁺:Y₂O₃ phosphor.

Riya Dey, Vineet Kumar Rai, Anurag Pandey

Index: Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 99 , 288-91, (2012)

Full Text: HTML

Abstract

The Y(2)O(3) phosphor powder codoped with Nd(3+):Yb(3+) ions have been synthesized through optimized combustion route. Crystalline structures of the prepared samples have been investigated by powder X-ray diffraction technique. Efficient upconversion emission in the green region upon 980 nm NIR CW diode laser excitation has been reported. The maximal enhancement in the intensity of the green upconversion emission band has been observed on codoping with Zn(2+) ions in the Nd(3+):Yb(3+) codoped sample. The processes responsible for such an enhancement in the green upconversion emission band which can be used for the localization and diagnosis of cancer has been explained in detail.Copyright © 2012 Elsevier B.V. All rights reserved.