Upconversion- and cathodo-luminescence properties of Yb3+/Ho3+/Li+ tridoped Lu6O5F8 nanoparticles

Abstract

Yb 3+ /Ho 3+ /Li + tridoped Lu 6 O 5 F 8 as a novel phosphor was prepared by a coprecipitation method. It is found that Li + doping could enhance the emission intensity of Yb 3+ /Ho 3+ codoped Lu 6 O 5 F 8 both under the excitation at 980 nm and low-voltage electron beam. Under 980 nm laser excitation, the intensity of red emission is slightly stronger than that of green emission, generating an overall yellow output in Lu 6 O 5 F 8 :20%Yb 3+ ,1%Ho 3+ ,x%Li + (0≤x≤8) nanoparticles, and the reason for this phenomenon is discussed in detail. Meanwhile, under low-voltage electron beam excitation, spectral results demonstrated that the intensity of red emission is much stronger than that of green emission, yielding a red color output. Therefore, Lu 6 O 5 F 8 :20%Yb 3+ ,1%Ho 3+ ,x%Li + (0≤x≤8) nanoparticles have potential applications in luminescent display panels and field emission displays.

Enhanced and Stable Upconverted White-light Emission in Ho3+/Yb3+/Tm3+-doped LiNbO3 Single Crystal via Mg2+ Ion Doping

“…Guo et al . revealed that the Li + doping could enhance the emission intensity of Yb 3+ /Ho 3+ codoped Lu 6 O 5 F 8 nanoparticles 21 . Many researches show that the codoping of non-luminous ions into RE 3+ ions doped upconverting materials is a promising way to increase the intensity of upconversion emission.…”