沸石中铋的宽带敏化使钕产生高效近红外发射。

Efficient near-infrared emission from neodymium by broadband sensitization of bismuth in zeolites.

机构信息

Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Nada, Kobe, Japan.

出版信息

Opt Lett. 2011 Mar 15;36(6):1017-9. doi: 10.1364/OL.36.001017.

DOI:10.1364/OL.36.001017

PMID:21403761

Abstract

Nd-Bi codoped zeolites were prepared by an ion-exchange process, and the optical properties were investigated by photoluminescence (PL) and PL excitation spectra, and decay time measurements. The results show that the NIR emission of Nd(3+) ions is significantly enhanced by the introduction of bismuth in codoped samples, and the lifetime reaches 246 μs. It is also observed that NIR-active Bi acts as a sensitizer of Nd(3+) ions. The energy transfer efficiency is also estimated. The peculiar optical properties make Nd-Bi codoped zeolites promising for potential application in biological probes.

摘要

钕-铋共掺杂沸石通过离子交换过程制备，并通过光致发光（PL）和 PL 激发光谱以及衰减时间测量研究了其光学性质。结果表明，铋的引入显著增强了共掺杂样品中钕（3+）离子的近红外发射，寿命达到 246 μs。还观察到近红外活性的 Bi 充当了 Nd（3+）离子的敏化剂。还估计了能量传递效率。独特的光学性质使 Nd-Bi 共掺杂沸石有望在生物探针中得到应用。