Luminescence properties of Tb3+, Eu3+ ions doped silicon dioxide

Lalruat Puia

Science Vision 26 (1), 13-17 | Published on 11 June 2026 | https://doi.org/10.33493/scivis.26.01.03

Abstract

Europium (Eu3+) and Terbium (Tb3+) singly doped and double doped with Silicon dioxide (SiO2) is synthesized successfully by the sol-gel process. A xenon lamp light source with wavelength, λe= 370 nm is used for exciting the sample. The excitation spectra of Eu3+ ion may show applications in the area of UVB, near UVA and green light regions. Magnetic-dipole transition (5D0→7F1) is the dominant transition in emission spectra of Eu3+ ion. The emission spectra of Tb3+ ion reveal four strong emission peaks at 488nm, 545nm, 586nm and 623nm due to the transitions of 5D4→7F6, 5D4→7F5, 5D4→7F4 and 5D4→7F3 respectively with the transition 5D4→7F5 (green emission) as the most intense. The excitation of their co-doped spectra also evident that there is transfer of energy from Tb3+ ion to Eu3+ ion in silicon dioxide.

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