Structure and spectral and luminescent properties of Y3AL5012 ceramics containing Ce and Cr

Abstract

Y jA ljO i2 :Ce3+ ceram ics additionally doped w ith chromium from the gas p h ase w ere synthesized b y a colloid- chem ical method. It w as established that its lum inescence spectrum included a broad poorly resolved ban d with a barycenter at 570 nm due to Ce3+ and narrow bands in the region 6 7 0 -7 5 0 nm due to C r3+ in Y3AI5 O 1 2 and YAlOj. The structure o f Cr3+ optical centers in both subsystem s, the kinetic properties o f their luminescence, and the transfer between them o f electron excitations w ere considered.