Abstract: In current report the photoluminescence properties and enhancement of luminescence intensity in MgO: Tb³⁺ phosphor using charge compensation is reported. The MgO: Tb³⁺ synthesized by combustion synthesis. X-ray powder diffraction (XRD) analysis confirms formation of the MgO: Tb³⁺ samples with cubic structure. The PL and PLE spectra indicate that the main emission wavelength of MgO: Tb³⁺ is at 382 nm in black light region i.e. hardly visible violet region (N-UV) under 270 nm excitation. The concentration quenching is studied for Tb³⁺ in MgO occurs at 0.002 moles giving highest intensity. Further, the optimum sample studied for effect of charge compensator like (Li⁺, Na⁺, and K⁺). The results show that the emission intensity can be improved by all the three charge compensators but charge compensation using K⁺ ions gives the optimal luminescence intensity. The concentration quenching of K⁺ also studied.
 
Key words: Photoluminescence; charge compensation; quenching effect.

Cite: Nikhilesh S. Bajaj, Chetan B. Palan, Shreeniwas K. Omanwar, "Low Temperature Synthesis and Improvement in Optical Properties of MgO: Tb3+," International Journal of Materials Science and Engineering, Vol. 3, No. 2, pp. 167-174, June 2015. doi: 10.17706/ijmse.2015.3.2.167-174