Efficient infrared-to-visible conversion by Er3+/Yb3+-codoped PbTiO3 perovskite will be reported. The process is observed under 980 nm laser diode (GaAs:Si) excitation and results in the generation of green (similar to555 nm) and red (similar to655 nm) emission. The main mechanism that allows for up-conversion is attributed the energy transfer among Yb and Er ions in excited states. The power up-conversion efficiency for red emission is predominant in this material. The results illustrate the large potential of this new class of material for photonic applications involving optoelectronics devices. (C) 2004 Elsevier Ltd. All rights reserved.