Enhanced Luminescence of Eu-Doped TiO2Nanodots

Nanoscale Research Letters

关键词: TiO₂;    Eu³⁺;    Nanodots;    Phase-separation-induced self-assembly;    Luminescence;   

DOI  :  

来源: DOAJ

【 摘 要 】

Abstract

Monodisperse and spherical Eu-doped TiO₂nanodots were prepared on substrate by phase-separation-induced self-assembly. The average diameters of the nanodots can be 50 and 70 nm by changing the preparation condition. The calcined nanodots consist of an amorphous TiO₂matrix with Eu³⁺ions highly dispersed in it. The Eu-doped TiO₂nanodots exhibit intense luminescence due to effective energy transfer from amorphous TiO₂matrix to Eu³⁺ions. The luminescence intensity is about 12.5 times of that of Eu-doped TiO₂film and the luminescence lifetime can be as long as 960 μs.

【 授权许可】

Unknown