Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8161169 | Physica B: Condensed Matter | 2018 | 17 Pages |
Abstract
A potential green emitting NaSrBO3:Tb3+ (1-9Â mol%) phosphor was synthesized by a citrate gel combustion method. X-ray diffraction patterns confirmed the monoclinic phase of the phosphor. The phosphor emitted intense green emission under near-UV and electron excitation due to the characteristic transitions 5D4â7F6(488Â nm),5D4â7F5(544Â nm),5D4â7F4(586Â nm) and 5D4â7F3(622Â nm) of Tb3+ ions. The optimal molar concentration of Tb3+ ions was found to be 6Â mol%, after that concentration quenching occurred. The dipole-dipole interaction was found to be accountable for energy transfer between the Tb3+ ions. X-ray photoelectron spectroscopy was carried out to analyze the chemical states of the elements and suggest that terbium was mostly presented in the (+3) valance state in the phosphor. The approximated Commission Internationale de lâ²Eclairage coordinates for the PL (0.31, 0.61) and CL (0.33, 0.57) were found to be very close to the well-known green emitting phosphor. The obtained results suggest that the studied phosphor could be an ultimate choice for green emission in display applications.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
A.K. Bedyal, Vinay Kumar, H.C. Swart,