A kind of up-conversion luminescence material with new composition was prepared

the material not only has the higher up-conversion luminescence efficiency

but also avoids the defect of fluoride host material.It consists of 58.52%PbF

2

-34.43%GeO

2

-3%Al

2

O

3

-0.05%Er

2

O

3

-4%Yb

2

O

3

among which GeO

2

acts as the oxide of glass formation

PbF

2

and Al

2

O

3

act as the regulator

and co-doped Er

3+

and Yb

3+

ions are taken as the objects of up-conversion investigation.The up-conversion emissive spectra were measured under 980nm excitation using a semiconductor laser diode

the very strong red light of 658nm and green light of 548nm and 526nm can be observed.Moreover

the red light emissive intensity is far stronger than that of the green light one.A nonlinear curve fitting to the relationship between up-conversion emissive intensity and excitation light power was made

it is concluded that both red emission and green emission are the absorption process of double-photon.The relationship between the operation current of 980nm laser diode and up-conversion fluorescence intensity was investigated

and the up-conversion luminescence characteristic was discussed.