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Photoluminescence mechanism of Eu-doped molybdenum trioxide prepared by combustion synthesis

Y. ZHANG1, M. RUAN1, Q. ZHOU1, X. MU1, J. DU1, E. XIE1, Y. SHENG1,* , Z. ZHANG1


  1. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China


Molybdenum trioxide (MoO3) powders have been prepared with controllable Eu concentrations (1~7 at. %). The X-ray diffraction and Raman results show MoO3 belongs to the orthorhombic phase. The intense sharp characteristic emission lines corresponding to Eu3+ intra-4f shell transitions of MoO3 were observed in the photoluminescence emission spectra at room temperature and exhibited a maximum at the 3 at. % Eu sample. The optical bandgap of MoO3 decreases from 3.26 to 3.14 eV as the Eu doping concentration increases from 1% to 7 at. %. Moreover, an energy transfer mechanism from MoO3 host to Eu3+ ions is proposed..


Molybdenum trioxide, Optical materials and properties, Sintering, Energy transfer, Rare earths.

Submitted at: April 23, 2018
Accepted at: Nov. 29, 2018


Y. ZHANG, M. RUAN, Q. ZHOU, X. MU, J. DU, E. XIE, Y. SHENG, Z. ZHANG, Photoluminescence mechanism of Eu-doped molybdenum trioxide prepared by combustion synthesis, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 11-12, pp. 642-645 (2018)