Abstract
The spectral and structural characteristics of polycrystals of Eu3+-doped lutetium borates Lu1 − x Eu x BO3) annealed at different temperatures have been investigated over a wide range of europium concentrations. The conditions for the preparation of Lu1 − x Eu x BO3 in the calcite and vaterite phases have been determined. It has been found that there is a radical difference between the excitation spectra of the main emission bands of the calcite and vaterite phases of the Lu1 − x Eu x BO3 borates. The influence of the europium concentration on the structure of Lu1 − x Eu x BO3 has been analyzed. It has been established that, at europium concentrations of higher than 15 at %, only the vaterite structure is formed independently of the annealing temperature. Thus, by varying the Eu3+ concentration and the annealing temperature of Lu1 − x Eu x BO3, it is possible to directionally synthesize a specific structural modification and, consequently, to control the spectral characteristics of this compound.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call