采用聚合物络合溶液法制备的 Y2O3:Yb3+, Er3+ 纳米粒子中的可调谐上转换发射。

Color-tunable up-conversion emission in Y2O3:Yb3+, Er3+ nanoparticles prepared by polymer complex solution method.

机构信息

Vinča Institute of Nuclear Sciences, University of Belgrade, P,O, Box 522, Belgrade, 11001, Serbia.

出版信息

Nanoscale Res Lett. 2013 Mar 22;8(1):131. doi: 10.1186/1556-276X-8-131.

DOI:10.1186/1556-276X-8-131

PMID:23522083

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3765681/

Abstract

Powders of Y2O3 co-doped with Yb3+ and Er3+ composed of well-crystallized nanoparticles (30 to 50 nm in diameter) with no adsorbed ligand species on their surface are prepared by polymer complex solution method. These powders exhibit up-conversion emission upon 978-nm excitation with a color that can be tuned from green to red by changing the Yb3+/Er3+ concentration ratio. The mechanism underlying up-conversion color changes is presented along with material structural and optical properties. PACS: 42.70.-a, 78.55.Hx, 78.60.-b.

摘要

Y2O3 粉末共掺 Yb3+ 和 Er3+ 组成的纳米粒子（直径 30 至 50nm）具有良好的结晶度，表面没有吸附配体。这些粉末在 978nm 激发下表现出上转换发射，可以通过改变 Yb3+/Er3+ 浓度比来调谐颜色，从绿色变为红色。本文介绍了上转换颜色变化的机制以及材料的结构和光学性质。PACS: 42.70.-a, 78.55.Hx, 78.60.-b.