Sb-doped lead tungstate (PWO) crystals were grown and investigated. The mea
surements of Sb content in crystals indicated that the segregation coeffici
ent of Sb in PWO is about 0.63. Even with a little Sb3+ introduced into PWO
crystal, the transmission, especially the light yield was enhanced signifi
cantly Furthermore, after the Sb-doped PWO crystals were annealed, not only
the fast component still remained a high percentage but also the radiation
hardness was improved evidently. The main reason may be that Sb-doping can
compensate the composition deficiency and then reduce the density of hole
centers such as Pb3+ and O-.