Here, we reported a novel and facile thermal decomposited method to prepare NaMnF3 :Yb,Er/Tm upconversion nanoparticles (UCNPs). In this method, Rare earth acetate and manganese(II) 2,4-pentanedionato were used as raw material. The as-synthesized NaMnF3 :Yb,Er/Tm nanoparticles were monodispersed, uniform and their sizes were both smaller than 10 nm. The NaMnF3 :Yb,Er and NaMnF3 :Yb,Tm nanoparticles radiated intense pure red emission and near-infared emission under the excitation of 980 nm laser. Then, the core/shell structured NaMnF3 :Yb,Er/Tm@NaMnF3 nanoparticles were prepared to enhance the UC emission effectively.
Xiao Peng, Shuai Ye, Yuliang Tian, Jun Song, Guangsheng Wang, Maozhen Xiong, Dong Wang, Hanben Niu, and Junle Qu, "A facile method to prepare NaMnF3:Yb,Er/Tm upconversion nanoparticles with single band (Conference Presentation)," Proc. SPIE 9722, Colloidal Nanoparticles for Biomedical Applications XI, 972208 (Presented at SPIE BiOS: February 13, 2016; Published: 28 April 2016); https://doi.org/10.1117/12.2212295.4848770174001.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon