Hexagonal phase β-NaGdF4:Yb3+/Er3+ thin films with upconversion emission grown by electrodeposition
Abstract
Hexagonal phase β-NaGdF4:Yb3+/Er3+ thin films composed of hexagonal prism structures were obtained from aqueous solution at low temperature by a facile electrodeposition. The annealed electrodeposited films exhibit intense green and red emission excited by a 980 nm laser and a two photon upconversion mechanism is involved.