Hydrothermal Synthesis and Up-conversion Luminescence of Ho3+/Yb3+ Co-doped PbTiO3 Academic Article uri icon

abstract

  • Ho3+/Yb3+ codoped PbTiO3 nanocrystals with different content of dopant were successfully prepared via a facile hydrothermal method. The purity, morphology, element distribution, chemical state and upconversion (UC) photoluminescence (PL) of PbTiO3 nanocrystals affected by Ho3+ dopant are investigated systematically. Xray diffraction (XRD) results illustrate that PbTiO3 samples with the doping Ho3+ concentration ranging from 0 to 5 mol% are perovskite structure. The doping Ho3+ ions have no change on the crystal structure of perovskite PbTiO3. Owing to the nonequivalent substitution of Ho3+ to Ti4+ in PbTiO3, the particle size of Ho3+/Yb3+ codoped PbTiO3 samples is decreased as well as the particle agglomeration is detected. Moreover, Ho and Yb ions have uniform distributions in the PbTiO3 nanoparticles as the presence of Ho3+ and Yb3+ cations. The upconversion spectra demonstrate that Ho/Yb codoped PbTiO3 samples have upconversion emissions centered at 550 nm, 660 nm and 755 nm, corresponding to the transitions of 5F4(5S2)5I8, 5F55I8 and 5S2(5F4)5I7 of Ho3+ ions. Additionally, the effect of temperature on the UC PL property of Ho3+/Yb3+ codoped PbTiO3 system is further investigated. The sensitivity and the trend of Ho3+/Yb3+ codoped PbTiO3 samples in temperature from 298 k to 493K are calculated on the basis of fluorescence intensity ratio (FIR) method. Ho3+/Yb3+ codoped PbTiO3 nanocrystals are verified the high potential in the optical temperature sensing.

published proceedings

  • ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE

author list (cited authors)

  • Xiao, Z., Zhang, J., Zhu, J., Xu, H., Wang, H., Xu, S., & Xia, Y.

citation count

  • 3

complete list of authors

  • Xiao, Zhen||Zhang, Jiawei||Zhu, Jing||Xu, Hui||Wang, Huanping||Xu, Shiqing||Xia, Yang

publication date

  • October 2019

publisher