Abstract

The upconversion luminescences of YAlO<sub>3</sub>:Er<sup>3+</sup> phosphor co-doping with different Gd<sup>3+</sup> concentrations are investigated under the excitation of 980- and 532-nm diode lasers. A near ultraviolet upconversion emission at 410 nm is observed in YAlO<sub>3</sub> under 532-nm excitation. Moreover, the inactive Gd<sup>3+</sup> ions can improve the upconversion intensity efficiently in a certain range of concentration. Under 980-nm excitation, the visible upconversion emissions at 546 and 646 nm are enhanced by about 10 and 8 times at the Gd<sup>3+</sup> concentration of 40%, respectively. The upconversion emission at 410 nm under 532-nm excitation is also enhanced by 7 times. The substitution of Gd<sup>3+</sup> ions for Y<sup>3+</sup> sites changes the local symmetry of Er<sup>3+</sup>, leading to the improvement of upconversion efficiency.

© 2012 Chinese Optics Letters

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription