File Name : ple.tif

Caption : the excitation spectrum of sc4zr3o12:1%er3+/2%yb3+ sample monitored at 563 nm.

File Name : 7 con vary.tif

Caption : uc luminescence spectra of sc4zr3o12: er3+/yb3+ series samples with different yb3+ doping concentrations by 972 nm excitation.

File Name : s3.tif

Caption : decay curves of er3+/yb3+ codoped sc2o3, sc4zr3o12 and zro2 samples monitored at 546 nm under 490 nm excitation.

File Name : sfour.tif

Caption :  under 972 nm excitation, the decay curves of er3+/yb3+ codoped sc2o3, sc4zr3o12 and zro2 samples when monitoring at 546 nm.