Emission color tuning of core/shell upconversion nanoparticles through modulation of laser power or temperature.

Emission color tuning of core/shell upconversion nanoparticles through modulation of laser power or temperature.

Nanoscale (2017-08-15)

Qiyue Shao, Gongtuo Zhang, Lilai Ouyang, Yanqing Hu, Yan Dong, Jianqing Jiang

ABSTRACT

Upconversion nanoparticles (UCNPs) are an excellent choice to construct security features against counterfeiting, owing to their unique NIR-to-VIS upconversion luminescence (UCL) characteristics. However, the application of upconversion materials is limited, due to their single and invariant emission colors. Herein, the temperature-dependent UCL properties of NaGdF

MATERIALS

Product Number

Brand

Product Description

325678

Sigma-Aldrich

Gadolinium(III) acetate hydrate, 99.9% trace metals basis

367702

Sigma-Aldrich

Thulium(III) acetate hydrate, 99.9% trace metals basis

467332

Sigma-Aldrich

Holmium(III) acetate hydrate, 99.99% trace metals basis

326011

Sigma-Aldrich

Ytterbium(III) acetate tetrahydrate, 99.9% trace metals basis